I'm surprised nobody's yet making custom coolers for them (complete coolers with heatsink/fans, not gluing a 3d-printed fan shroud to the front) and re-selling

I'm surprised nobody's yet making custom coolers for them (complete coolers with heatsink/fans, not gluing a 3d-printed fan shroud to the front) and re-selling them. Seems like a niche gap in the market.