Canvas will become de-facto, just like React did. Once that happens, indexing and scraping the web won't be trivial anymore. One would have to "opt-in" to using HTML/CSS to make sure that their page would be indexable. Clearly also indicates that Google is willing to give up on its web-indexing capabilities in the long term, now that they have a stronghold on the Mobile app marketplace. Most likely spells doom for websites, further making "apps" the norm.