This was before they added F2P, but ten minutes a day of checking my two hisec market alts (who didn’t have a lot of skills because it meant pausing my main’s training) was making me just enough to pay for my account and there was room to expand further. Granted, it did take me several months of trading to build up enough funds to support this operation, but I don’t think it’s reasonable to expect to do this on day 1.
They’re not talking about natural monopolies. A natural monopoly is when there’s some barrier to entry that prevents competitors from entering the market, like a need for prohibitively expensive infrastructure.
What OP is talking about are situations like Walmart opening a store in a new location, operating it at or near a loss to drive the local competition out of business, and then jacking up prices once no competitors remain. The government isn’t forcing them to do that.