There is no mandate to trust the root DNS servers. Someone like Google (8.8.8.8) or Cloudflare (1.1.1.1) could just start registering their own .org domain names and nobody could stop them.
The resulting shitstorm would be so enjoyable to watch.
Previously the CEO of Cloudflare has been against making 1.1.1.1 return anything non-standard, because even a single instance of that would ruin the integrity of DNS.
Given the headwinds the browser DNS-over-https efforts have run into, I wouldn't expect them to want to try it.
But I was pondering the merits of eg: a regional block of ISPs declaring they'd like to try, and seeing the effect that had on the value of the 'legacy operators'
The resulting shitstorm would be so enjoyable to watch.