Why are the PL mounts not covered by the Mount conversion service?

The internal mechanism of the SIGMA PL mount cine lenses are very different from EF mount and E mount. Therefore to change the mount, we need to dismantle the whole lens. To guarantee the performance of the lens once dismantled, it requires the same exclusive equipment as building a lens from scratch.
Considering the delivery date and cost, we have not covered PL mount for the mount conversion service.