Well it remains to be proven how they can make a business out of fixing nodejs fundamental problems.
The business value the Bun team needed to deliver (to make the acquisition pay out) might very well be this controversial, but nevertheless spectacular, 6-day Zig→Rust port.
But beyond that, now Bun is just tooling used internally at Anthropic, which also happens to be open-source.
Certainly the recent layoffs¹ of ~half-or-so of the Deno team doesn't bode well for it, as AFAIK Bun was the only other significant player trying (to make it a business).
¹: https://www.reddit.com/r/Deno/comments/1rwjaeb/whats_going_o...