How do people even become successful selling pokemon cards?

LOL is right.
Most ebay sellers dont make money, they just turning the product for a hobby to improve there collection.

You all wanted to turn this topic into a money topic. I posted to let members know the trend and pokemon is doing just fine.

You all getting what you ask for.

Yes some people got lucky by being heavily invested in the hobby before it boomed, but that’s not a repeatable strategy. Missing that boat doesn’t mean there’s no longer plenty of opportunity.

I think your other points are right, if you want to run a sustainable pokemon business you need to treat it as such. Identify trends in the market, build expertise around grading, establish yourself as a reputable buyer/seller, figure out marketing (e.g. youtube), etc.