It is hugely lucrative...

Make a quadrant chart of ways to make money with assets. The X-axis is margins and the Y-axis is overhead costs. You could even add a Z-axis for weight as you need the ability to transport a lot for scale. There are very few assets with comparatively low overhead costs, high margins, and low weight.

You pretty much just have only drugs, share dilution and - as of this decade - cryptographic tokens. They all pretty much invoke the same highs.

Worth it.