What do you mean by commercial browsers? Edge is backed by MS, Safari by Apple, so they are out. Firefox is a backed by a foundation, a not for profit. Brave

What do you mean by commercial browsers? Edge is backed by MS, Safari by Apple, so they are out. Firefox is a backed by a foundation, a not for profit. Brave is on top of chrome, and open source. I guess the old Opera browser ran ads in the browser and was a commercial browser. And did people pay for netscape navigator?