It’s not a chilling effect. It’s how value is exchanged in a free market.

Open source makes sense when many companies benefit economically from sharing resources to develop common software/tooling.

Open sourcing code from inception can lead to adoption and create profits.

At some point that code may be more valuable to another company in some way and they profit from it.

I don’t see Linus Torvalds complaining about companies that profit from Linux but then again Elastic Search has shareholders to answer to and their trademark has been violated.