Why are the OEMs not making sets for everyone?

[Burnsey]

Lofts can be bent, altering bounce and turf interaction.
It's not the same as building the club to the desired loft from the beginning.

Hopefully, new 3D digital technology will someday let the OEMs build
modern, high tech, multipiece clubs to customer requested specs
as was possible with the simple, low tech clubs of the past.

Custom iron grinders today are only offering simple, one-piece iron heads without modern tech.

I do agree, however, the post was more about the OEM manufacturers and my experience of lift loft adjustment is only half to one degree, so the characteristics of the club remain as designed.

The fitting process included a follow up and I have used a set of ‘bent’ irons, which were awful, so I was pessimistic, but all ended well.