Thoughts
The web standards committees show no sign of slowing down.
I legitimately think the addition of features to the web platform will stop when:
* a browser like Chrome gains enough market share that it can start vender-locking websites until it gains 100% market share
* a browser like Safari uses its platform advantage to capture enough market share that it can refuse to add features and hold the other browsers hostage
* JS becomes so bloated and unmaintainable that it becomes impossible to write bug-free websites (sic, we’re here already and no one cares)
* something radically different (ten times better than the web) comes along and the web dies