A side business that is still a requirement for anyone to ship software into Apple’s iPhone ecosystem, so there’s at least some incentive for Apple to continue supporting it.

But given that developers have no choice in the matter, they’re stuck putting up with whatever issues Apple doesn’t bother to fix. I’m sure Apple is well aware of that when prioritizing what bugs are important.

I always show people this[1] graph when they complain about Macs feeling like an afterthought to Apple. It's because they are, in terms of total profit.

[1]http://cdn.arstechnica.net/wp-content/uploads/2016/04/Apple-...

If spun off into its own business, the Macintosh business would still be a fortune 500 company.

I get that Apple makes more revenue from other products, but the Mac is still extremely profitable. They ought to give it some attention on those grounds, if nothing else.