That's my thinking as well. Take GitLab for example: you can self-host private repos using the community edition of GitLab for free, or have them host it for $3

That's my thinking as well. Take GitLab for example: you can self-host private repos using the community edition of GitLab for free, or have them host it for $35/mo. Loads of users choose the latter because it's less maintenance and easier to get started with. Larger companies on the other hand will pay for the enterprise edition so that they can self-host it.