Roam is the app I love to hate. I love it, but I really wish a competitor was built with a focus purely on speed, security, and reliability (plus the roam innovative linked references and tagging). I suspect a large % of users are over served by all the intricate features and many just want something basic with bi directional links that’s fast, secure and reliable, which is exactly the disruption-ripe scenario Christensen describes.
Every time I use roam I have a slight fear in the back of my head it’s going to lose some of my notes or have a data breach.
If you need something mature, [tiddlywiki](https://lesser.occult.institute/an-opinionated-approach-to-t...). If you're open to something real new (and like that shiny interface), [Logseq looks really good](https://github.com/logseq/logseq)