Adobe feels like that for the same reason: you get an annoying swagger when you own a monopoly.
Adobe owns "rich content" on the web. And just like Microsoft, they also know what a pain technology transitions are. No company wants to support a flash version and an HTML5 version of their site/product/app. And just like Microsoft, they'll start to advertise how all the fun stuff runs on their platform instead of building new stuff.
Realistically, flash is here to stay at least until IE supports HTML5 and achieves a critical mass. Until then, Adobe can give the finger to everyone and maintain control no matter how hard developers or competitors whine. Feels very familiar indeed.