I wonder how many upgrades are from tightly hidden STC templates? Probably a lot, where only select societies have access, and the elite trade and steal knowledge to get better implants.
There are rumored to be incredibly old magos on Mars. So, obviously the technology trickles uphill.
Wealth is created when we use new knowledge to create new things or improve efficiencies.
This technology, along with people pondering applications using type three levers is literally a new mechanical revolution in waiting. There are going to be many patents, from people who're curious and can tinker.