A detailed post a little outside of my niche, but this resonates:

Manageable and Scalable Goals: Custom-built solutions are tricky and take some time to get right. A progressive transition to more open source software might be better than trying to engineer an all in one solution.

Dramatic rewrites/reforms are hard to pull off. Progressive transitions are much more likely to succeed. Sonos’ botched new app is one recent example of that.