And what's to stop Apple from changing things up again? The most insidious problem with these walled gardens/lock-in environments is that you don't know what's

And what's to stop Apple from changing things up again? The most insidious problem with these walled gardens/lock-in environments is that you don't know what's coming next. I got out of MSFT development when I saw that they basically said "all that stuff you learned and invested in, we've decided to break it, but you can pay us for the next version and do it all over again!" The VB/VBA programs I wrote back then are long gone. The C/Perl/Java programs I wrote against standards still work fine. Sure I might have to make some tweaks if I want to catch up to the latest version, and some day Oracle will do something stupid to Java and we'll be stuck with the previous version, but I won't concede retroactive control over my investment to another company's marketing department.