This is the Adobe we want. Kudos to them for paying attention to HTML 5 as a valuable tool for web developers.
So Adobe probably understands the issues of open/closed better than anyone, and has an organizational structure that has proven able to adapt to it.
[ Though it's worth noting that MS made an incredible sacrifice to ship windows for netbooks at a massive discount, to fend off linux. Although I use a linux netbook myself, I have to admire their foresight and fortitude. Another company is Intel. Although I don't have a specific story for them, Andy Grove wrote a book Only the Paranoid Survive, and also has a blurb on the cover of The Innovator's Dilemma ("lucid, analytical - and scary" he says) - they know the danger, and have lasted a long long time, as the driver (and proposer) of Moore's Law. ]