A store has costs beyond the credit card fee. Complying with tax and regulatory items, salaries, storage and bandwidth, reviewing to keep illegal or pirated apps off, as examples. Then their is advertising to get people to actually use your store vs Apple's. I think it won't be as easy as some think.
There are already stores which charge less. I noted in the thread previously we were able to negotiate lower than 7% on both Amazon and Samsungs stores. And our rate on the Chinese stores (for Xiaomi phones etc) is even lower than that.
I didn't say stores should charge 1.5-2.5% which is what the bank fees are for small independents (Apple pays way less than 1% btw due to their negotiating position). I suggested all the way up to 7.5% which is still a far cry from Apples 15% for small and 30% for large developers.
Even Microsoft on the Windows store only charges 12% and they're pretty greedy. EPIC on their store charges 12% also and that goes as low as just 5% if you use the EPIC's game engine (Unreal Engine) in your game. It's funny, other stores give discounts to use their API's and Frameworks but Apple charges you the same regardless.
The difference of course is EPIC's store has competition (STEAM, GOG, Origin, uPlay etc). Where as Apple has no App Store competition so they can charge what they like.
Part of what you ask for is simply not up to any one company to create a consortium. Sure, Apple could lead the way, but no one else has to join them in anything. Plus this is an innovation killer sometimes as it will prevent Apple from creating something new that no one else does. Or no one else does the way they (Apple) do. Whom is to say when such things should be a collaborative effort and shared among those that worked towards said goal. VS it being the last thing you ever work on? You can't force a business to do business with another business for the benefit of the masses. You will end up with very few business since it takes resources (money and people, time and energy) to do this. All for what? To mostly give it away?
Yes, there will be times when it works out better for everyone involved and the consumer. But, not 100% of the time. If Microsoft went Open Source and just charged people for support, they would go from 2 Trillion value to a quarter that overnight. There are times it works, and times it does not. You can't have a successful business operate as a non-profit and expect to grow and continue to do it all. Something will give.
You're really muddying the waters here trying to equate laws that require interoperability with giving away your prized possessions, in this case source code.
There are equivalents to iMessage, Facetime and many other features that Apple could and should be forced to offer some compatibility with and thankfully the law is seeing it that way too.
Look at FRAND licensing of patents as a gateway to how fundamental technologies have to be licensed on a fair basis for fair competition.
Take USB. There is a million different plugs and what 5 different revisions. Greater speeds etc. But, the EU wants everyone to use USB-C going forward. Ok, so does that mean I can't create USB-D? Are we locked to this exact interface or spec forever on any device? Why C? Why not A or B?
USB-C is a very long lived connector as a physical standard. It's capable of over 140 Watts of power delivery and unfathomable speeds. Thunderbolt 4 at 40Gb/s runs over it and we will likely see 100Gb/s in the future. If companies decide to standardise on a USB-D it will happen as a natural progression.
Heck, why are we not all driving on the same side of the road? Why don't all cars and trucks run on one type of fuel? Why aren't all power outlets the exact same? I can go on.
It's funny you say this because there are movements in law to standardise these things across countries, especially in the EU. Multiple countries here have changed which side of the road they drive on to broaden the car markets and make things cheaper through scale. Same with electrical outlets in the EU.
And as for electrics in general there are thousands of regulations and they add more every year to increase safety. It's extremely regulated. Just like we have regulations about transformer efficiency.
Like going through this thread it's as if none of you are aware we have rules and regulations for pretty much every product and product category in existence. If it was up to some of you we'd still be letting companies make asbestos filled teddy bears and lead based painted swing sets.