Having access to the source is just one part of open source.

The state of webkitgtk is a bit rough, as I’m sure you and your engineers have noticed. The other part of what open source means to people is that you contribute back to the open source code you used to build your business, lifting all boats in the process.

What people certainly do not want to see is Kagi pull an Apple: utilize FOSS to the extent it helps you but return nothing but “thanks everyone but we got ours”.