As a staunch Linux user, I'd rather have a Windows where I can install anything than a "Linux" where all software comes from an app store. But I expect Google to find some middle ground that allows enough freedom to develop on the OS for the OS, with enough fiddling and scary warnings to keep most users from using that mode.

For now I'm kind of neutral leaning negative on this initiative. I fear more dumbed down, locked down and centrally controlled computing on PCs.