I take photos miles from where there's cell signal. I write code on the bus while heading to doctors appointments. The web is about as far from a panacea as you can get. It's slow, it's bloated, falls apart when you don't have a connection, useful applications die when the company dies. Were some of the midi devices I use for music "web-based" they'd have probably become doorstops decades ago. A web-based IDE would be horrible for trying to develop code with an intermittent connection. The web is not a good time.