I think the answer is a common one in free markets: cost. Adobe would need to invest a _lot_ to make a good HTML5 IDE, and what would they get then? At best th

I think the answer is a common one in free markets: cost. Adobe would need to invest a _lot_ to make a good HTML5 IDE, and what would they get then? At best they'd be in the same situation as they were before just with HTML5 instead of Flash, and on top of that they would have lost control of the platform. So the bean counters find this kind of proposition difficult to swallow. And if you say: but what if someone else did? Then they'll reply: well, then make sure Flash kills anything HTML5 related, and that's how they end up putting a lot of money to preserve the status quo, instead of using their baskets full of gold to make them run faster.