Riiight. They had a fantastically enjoyable and profitable business going for themselves...but they decided they'd rather give up all control and sell their baby to a much larger corporate entity, give up the future upside from any growth, and play office politics instead of control their own destiny.
Not really. They did so because people pay MUCH more for much less functionality in Canva, and so accepting the offer gives them a payday they couldn't hope to accumulate themselves.
...because it just "felt right."