Well $3,000 in 1980 is about $10,000 today using an inflation calculator. [ snip] ...for any real business, even a one person shop, you are better paying full price up front for your developer tools and paying a lower commission on your total sales revenue.
You missed the point entirely.
There are other costs of running a software business that weren't even mentioned including advertising, processing payments, distribution, etc. not just the compiler and dev tools.
An ad in a trade publication is $3000+. TV Ads? Physical mailers? Attending a trade show? That was just to get the word out. How about printed documentation and physically distributing floppy disks/CDs?
FWIW the App Store gets you free advertising, a distribution method, payment processing, and generally a way to get the word out just by virtue of being ON it.
Apple also doesn't dictate what price you need to sell your app at, so feel free to price it at whatever markup you need to sustain your living expenses—just like manufacturers and distributors have had to do for millennia.
You know what Apple's markup is, price yours accordingly. Honestly this is why most businesses fail because they don't take into account every aspect.
The is also not a new problem. Especially in e-commerce, people think they can run setup a Shopify store, sell some crap from China via google Ads or Amazon FBA, and make money. Little do that know it takes way more effort than that to acquire customers.
Apple's cut is only a small piece of running a successful business, it just happens to be the most visible.