I think a lot of developers were willing to let it slide when App Store was a luxury market. You could just ignore it and make regular webapps and/or desktop software.

But now iOS is the most popular computing platform in the US. We no longer _have_ an option to ignore it.

And 30% is just crazy. And it's _on_ _top_ of all other expenses: Apple hardware that you need to buy to develop for iOS, $100 per year subscription fee, overhead of using Apple's shitty tools, etc.