I don't know of anyone who only does razors, maybe one of the guys who is retired from a career, and is doing razors on the side but still that is a hobby....
For the prices that Altima55 gets for his razors on Ebay, if he's not restoring and selling razors full time I'd be surprised; if I were he, I'd consider giving up my day job!
Oh also, strange question but is it possible to round a straight (spike) blade? I knew that is probably taboo but I mean, is it possible to enjoy a vintage spike without the spike?
Yup, you just grind it round, but there are plenty of round tips out there and there's no need make your own.
I just rounded off a Wester Bros flat tip a few weeks ago only because of some deep pitting close to the point. No problem.