Setting aside the veracity of the $100m claim: Manus is a spin out of a spin out, building on ~10 years of previous work. The “fastest company to 100m arr” has become a meme so it doesn’t deserve much scrutiny but it seems a somewhat tenuous claim in this case.

https://en.wikipedia.org/wiki/Manus_(AI_agent)

After 10 years of hard work, it was an "instant" success.