Hm good question. Seems like VC investment money?

https://techcrunch.com/2023/11/02/charm-offensive-googles-gr...

> Charm had previously raised around $4 million in funding spread across various angel and seed rounds, and now the company is adding a further $6 million to its coffers, with Google’s VC fund Gradient Ventures leading the charge, supported by Cavalry Ventures, Fuel Capital, Firestreak, and a slew of angel backers.

https://charm.land/blog/the-next-generation/

There used to be development of enterprise and cloud offerings, but that seems to have disappeared.

Hopefully they keep the "hobby project that people decided to throw money at" vibe and don't start chasing business incentives.