It's interesting that people forget the iPhone was originally HTML5-apps-only, there was no app store, there were no 3rd party native apps. The roots are there. They just need to be watered.
I've been tinkering with HTML5 apps for the last few years. If you're on the desktop, I don't think there is reasonably anything you can't do. On mobile, there are still a lot of problems with audio. That is very unfortunate for a host of different types of apps, but for a lot of others it is no big deal.
There are things that I'm doing with my current project, https://www.justwritedammit.com, that I just don't think would be possible without HTML5. Building a cross-platform experience has been significantly easier than Java ever allowed me to do, and I'm getting to hit more platforms. I can deploy changes NOW and I can do it 20 times a day if I want. And I have 100% feature parity between desktop and mobile.
I've been tinkering with HTML5 apps for the last few years. If you're on the desktop, I don't think there is reasonably anything you can't do. On mobile, there are still a lot of problems with audio. That is very unfortunate for a host of different types of apps, but for a lot of others it is no big deal.
There are things that I'm doing with my current project, https://www.justwritedammit.com, that I just don't think would be possible without HTML5. Building a cross-platform experience has been significantly easier than Java ever allowed me to do, and I'm getting to hit more platforms. I can deploy changes NOW and I can do it 20 times a day if I want. And I have 100% feature parity between desktop and mobile.