Could they? Under what business model? Maybe the numbers for the paid products just weren't there and they see this exit as a positive for the team?
With all that said, I don't think we can extrapolate that their business wasn't doing well or that they couldn't have raised more money. Cloudflare probably just offered a good enough deal that it didn't make sense to try to grind it out.
What I really mean is that when M&A happens, it seems like a lot of people think the acquirer is the only one with any agency, and that's not true at all.