A person's expertise doesn't have to be money-making.

A useful example is found in the compliments many Asians give to friends / relatives who are good cooks.

"Oh, your dish is so good. You should open a restaurant. I'm sure you'll get a lot of business. I'll definitely come and support."

Yes, it isn't meant to be taken literally. Even so, the way that being good at something is so quickly associated with money shows what is valued - and it certainly isn't the expertise itself.

Which is a great pity, isn't it?