R&C Squashies?

Too late to meaningfully join any of them.

If the money involved is enough to ensure they are not poor and legal protections exist, should there still be such a ban?

Yes, when it’s the product of apprenticeship, where there is a clear gain, without loss in other areas of education. As to the amount of time it takes from childhood, the matter is less clear, as it is within societies that permit cram schools. But if you allow one, then you can allow the other.