Currently I'm keeping up with inflation by stacking and I wish I'd done more, quicker and sooner! I can't think of any job that would keep up with inflation, unless you own a bank or are one the elite. Perhaps, out of the 4 you listed, maybe investor if you are investing in BTC. I'm not saying that to be a stereotypical bitcoiner, I just genuinely can't think of any jobs that would - right at the moment. I'll be interested to hear if anyone else has any ideas.