The big money is in doing those things too and not just being one small piece of the puzzle. So, for us, that means helping teams be successful with app development in general using our software/tech in the process (i.e. scalable software product on a yearly subscription and the same as sold to other customers, not custom development).
If you want to go down that route, get ready to have excellent support and be willing to be seen as an expert that your customers are going to call upon. But support is tablestakes for B2B so that comes with the territory.
Of course, this is no small leap. Going from having a successful open source project to building an enterprise business around it is really hard and took a lot longer than I expected. Looking back I wish we spent a little less time worrying about GitHub stars and more about solving enterprise problems, but we made it through!
Of course this is just one way to monetize and I’m also excited about the growing OSS sustainability offerings out there, like Tidelift