Open source is a gift you’re giving.
Companies take that gift and use it to provide a service for cheaper than it would otherwise be if they had to build it all themselves.
You are already benefiting from open source - but it is a tiny benefit and subtle and very indirect and very diffuse.
Licensing is thorny but it’s personal choice too.. would you use a project whose license is “use it for now unless or until I decide you’re evil at my discretion”.. probably not. Probably, someone else would get the users you have now, and the corresponding popularity.
It is a tough choice, but it’s a lovely and important thing you’re doing when you provide the gift of open source software.