Uh huh. Yes we all remember how great Flash ran on Linux from the get-go. For a while you had more luck running win32 apps on linux than a flash app. So I disagree with your statement that they have a point. It may be that it currently runs on all PC-based platforms, at this present time but that was not always the case, and is unlikely to be the case in the future. It certainly runs like ass on OSX, and leaks like hell.
When you talk about apple, you seem to be suggesting that what they are doing is bad. So Apple driving people to their platform is bad, but Adobe driving people to their platform is good? How odd.
Flash is a platform, just like win32, windows forms, silverlight, Carbon, Cocoa, X etc are platforms. Some are open, most are not. Microsoft, Apple, Adobe, all want to drive you to their platform because that is how they make money. This is capitalism. But you don't have to buy any of the bullshit any more than you have to buy their products. I find it odd that you like that taste of Adobe's. Apparently even people who eat shit like to argue about whose tastes better...