One reason could be difference in how much the other platforms pay vs YouTube. Uploading multiple places also requires more effort and coordination, might not be worth it from their perspective…

Depends on the terms of the contract…

Even this probably won’t result work though because you need to put the clamp around only one wire, not the entire power cable that has live, neutral, ground.

I think weight in the wheels is a huge downside of hub motors though? So this kinda takes a middle ground… Unsprung weight is still increased but not nearly as much.