This, I bought a Triple A title once with money from drops without never interacting with this shit. I would play anyway but I got "paid" while playing. It's a marketing tactic and we need to be aware of this, some people will see the opportunity to "make money" playing and will invest a shit ton of cash to maybe drop a rare item but if you don't do that you just getting a little bit of money to buy games with.

Selling is the problem, it makes it actual gambling.