I understand that money is at the root of the question. I don't see any problem with my strategy for making money, which is to win over all their users with a wildly better product.

Github itself basically followed this route. They didn't built Git on top of SVN. They built a much better product (than Sourceforge) and they used network effects (particularly their free-for-OSS offer) to grow their userbase until they could start to land corporate contracts.