Advice on investing according to my ethical values

I have a firm belief that I shouldn't profit off of other people's work based on ownership. That is a personal stance and not something I wish to discuss here.

I don't like the idea of buying the rights to the surplus value of someone's work in perpetuity.

What I would like to do is help new companies get capital by investing in a way where I loan them money with interest and they can pay it off and regain ownership of the business over time.

Can anyone advise me on how I can do this?

I know this isn't the best way to grow wealth for myself, but it is what I would prefer to do.