Obviously something. Otherwise more people would have stayed. I could probably list some specifics, but I think the problems are found on a deeper level.

Let me put it this way. If I had monopoly on money printing and monopoly on news, media and entertainment. I would make damn well sure that I had a foothold in decentralized platforms like Nostr.

1. I would absolutely make sure that I had some kind of content control. (Funding and paying)
2. I would also make sure to do whatever I could to prevent getting the snowball rolling (As "decentralized" spells trouble, loss of control and narrative).