I think the web is the
only viable platform for new things.
If you look at the data[1], the most usage is on apps but nobody is downloading new apps. Everybody is using the Facebook, LinkedIn, Reddit, Uber, etc. apps they already have and they are not interested in finding new apps.
Most of those apps have a ton of links to content on sites around the web (FB, Pinterest, Reddit app, etc.) That's really the platform of the late 2010s: Web content.
Even Hacker News is a platform for by web content!
[1] https://techcrunch.com/2017/08/25/majority-of-u-s-consumers-...