Well, 4G is already way faster at peak than most household's ISP internet connection.
So I don't think that argument holds water.
I'm still thinking that the reasoning behind the long term decision to not have it as an option is usage patterns, and OS.
By usage patterns I mean form factor and usage. With a laptop, when you open it you typically aren't just grabbing it to check something quickly, you are likely settling in for a more engaged and focused or prolonged session, and you are much more likely to either be sitting down somewhere stationary, not on your feet.
With the iPad, and even more, an iPhone, your interactions are typically much shorter, more casual, and instantaneous, so your connection needs to be too.
In addition you've got OS X that is not optimised at all for mobile data - it would absolutely chew through a typical data plan, and probably irritate the heck out of people.
I don't know, take it for what it is, but I think as far as Apple goes, they've made their decision on cellular capable Macbooks for the foreseeable future.
4G faster than most people's internet? i don't think so.
first we have to be clear, how to define people's home internet? it should not be the speed of the plan they choose, instead, it should be the max speed available in their region.
why? because people sometimes don't use the fastest internet they can get for economic reasons. it's just the difference in ways how cable company and cellular carrier charge people.
if someone choose 10mbps instead of 100 which is also available for him, it's very unlikely for him to use LTE to replace his home internet.
so, after we clarify that, it's much easier to compare. the theoretical max speed for now, is 150mbps. while for home internet, there are even 2g connections. and even using traditional cable service, you get theoretical 300+.
also, we all know theoretical speed for wireless connection, no matter it's wifi or LTE or whatever, is very 'theoretical'. you're NEVER gonna get speed even near that. but for wired connection, gigabit for example, usually you get at least 900 or 950+ if you are using the right equipments.
also, wireless connection is very unreliable. for wired connection, you control how many users in your service area. say you have one small community, you know how many people will be there, and you build enough backbone network capacity for that. so no matter what people do, it's unlikely they will suffer from congestion. but cellular? you never know many people are coming to your area, because everything is mobile. so you either spend an excessive amount of money to build a super high volume network, or you have to suffer from network congestion sometimes.
at last, you know cellular is still connected to a wired network right? it's just like thousands of people sharing a giant 'wireless router', except it doesn't use wifi. so why not build wired connection to each houses, so the wireless connections are more reliable, and flexible.
simply put, if you are in some very remote areas, yes, wireless connection may replace your internet, because building a dedicate line just to your house may not be cost efficient. but cellular, or satellite? i don't know.
for towns, cities, and populated areas, wired connection is always superior than wireless (quality-wise)
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don't get me wrong, i wish macbook can have LTE connection, it's just i believe it's highly unlikely to happen.
just think, att changes $50 a month for 5g, seriously, what can you do on a mac for 5g?
and the only grandfathered unlimited data plan that can tether, was only offered for 39 days. how many of them are left now? hundreds?