[RogerBW]

The private equity firm that rolled up large chunks of boardgaming under Asmodée has now sold it, which suggests that investing is not a good way to make huge profits.

While there are certainly exceptions, the people I know in the gaming industry do it because they love it, in a much greater proportion than say people in computer games. Boardgames are only marginally profitable a lot of the time (and as people around the world feel poorer, and shipping gets more expensive, crowdfunding physical objects looks as though it's due for a major hit). RPGs are even less profitable, unless you're D&D.

And of course a lot of game companies are too small or too private to have tradable stock anyway.