The big thing for me is the question of the future: they say they currently won't be predatory about it[1] and I have no reason to doubt that the people saying that are being completely honest, but we don't know who will be working there in the future or where the next acquisition/merger will take them.
Without a contract, it's hard to disagree with the policy types who are going to ask what protects the organization if that happens. Once you go down this path even a little, the barriers to entry at large organizations go up since you have to look at it from the perspective of both the upfront cost and possible future cost / off-ramps.
Some years back I tried to pay the $50 for the VBox extensions - small company and I was the only user. They were very confused, almost like they couldn’t understand that I really wanted to pay for something that I judged good value for the money.
They ended up telling me to forget about it.
I guess that perhaps they only want to target large businesses.