EDIT: I believe Steve Jobs is largely responsible for popularising the idea of HTML5 as a Flash replacement. He's also popularised the idea that HTML5 is technology that can be used now, when the situation is actually a lot more complicated. I think that without Steve's input, HTML5 wouldn't have reached the wider public's consciousness in the way it has - and there'd be far less misuse as a result.
EDIT: I believe Steve Jobs is largely responsible for popularising the idea of HTML5 as a Flash replacement. He's also popularised the idea that HTML5 is technology that can be used now, when the situation is actually a lot more complicated. I think that without Steve's input, HTML5 wouldn't have reached the wider public's consciousness in the way it has - and there'd be far less misuse as a result.