Inflation is ~3%
This is mostly AnPs being good mechanics but horrible businessmen.
Wood and fabric work isn't hard. It's just no one wants to do it for reasons. Sheet metal work requires multiple bucking bars and rivet sets/pullers/drill bits, very expensive air tools and shop air. Wood requires a saw and clamps. Fabric requires a fancy pair of scissors and a heat gun/iron.
Curious, how much fabric work have you actually done? Which processes?
I can speak from experience after doing several complete restorations and using different processes. If you think recovering only requires a “fancy” pair of scissors and a heat gun, that’s laughable.
You are aware the entire aircraft has to be disassemble, inspected and repaired where necessary. That alone takes many tools.
Cleaning, painting parts is another job and replacing worn out parts (cables, pulleys, fairleads, etc)
My last restoration was just above 1,000 hours of labor.
Another thing about fabric is it takes skill. Learning that skill from someone else is invaluable. Straight stitch lines, straight tape lines take practice. Rib stitching takes patience and time to come out looking right.
Oh, then the aircraft needs to be reassembled. This will involve rigging the wings and the control surfaces. Engine installation, prop installation, fuel tank plumbing, rigging engine controls, etc.