Yes, agreed, those fixtures would absolutely help with a large-scale repair operation. But if you're only doing it occasionally for your own device, the time taken to receive, unpack, pack and send back the fixtures would probably take more than just using lower-cost tooling that you own.

A big reason why I do my own repairs is because it allows me to optimize the logistics of it by removing the time-sensitive component of shipping; I order common parts & tooling (multiples so I have spares if I fuck up) well in advance of any breakage so that the actual repair no longer depends on the shipping service or my ability to receive packages. Putting the shipping service back in the critical path would negate all those advantages for me, making it no better than just shipping the entire device to Apple/AASP to begin with.

The only major advantage I see here is that the display press would likely guarantee the water-tightness of the repaired phone, though personally I've always just done without and accepted that my device is not watertight, especially considering I don't trust the factory one either after months of heavy use, thermal cycles and minor mechanical shocks & damage.

> This could be targeted at corporations that have staff to do in-house repairs of their hardware.

Hopefully in the future, yes. As it stands though this is unusable for large-scale in-house repair operations as you can't stock parts and have to order them as needed since you need to return the old part in a timely manner.