I'm not sure - in my experience I find that issues from new GH users are usually suspect (e.g. see [1]). So it might be nice to have something like the "Limit to existing users" [2], except not limited to a 24-hour period.
I wish GH users felt obligated to disclose they work for a company when creating issues that are for their company, but that's not something GH could (or should) enforce.
Many large open source platforms address this particular issue with paid support plans. You might find that the company you ended up doing work for would be happy to have paid their way.
I also find some of the best improvement suggestions come from people using the software in heavy real world use, which tends to be businesses. They have very real pragmatic needs.
I wish GH users felt obligated to disclose they work for a company when creating issues that are for their company, but that's not something GH could (or should) enforce.
[1]: https://github.com/schollz/find3/issues/66#issuecomment-3829...
[2]: https://blog.github.com/2017-05-30-introducing-temporary-int...