I'm not even sure how that's really realistic in the US at least.
I think a lot of people with full-time desk jobs have a 401k or a Roth IRA, and most of those are stock-based (which is really the only way to make sure your money doesn't decay in value due to inflation), and those are generally going to be stuff like total-indexes or S&P500-based index funds.
There's probably technically something else you could peg it to, so that's probably not strictly true, but I think an awful lot of people are sort of buying Apple stock without fully realizing it.
Or stop buying their stock... but that is difficult thing to embrace. As, we know, these companies are very profitable.