Well spacies is one of the best cab builders I have ever seen and he is making these and selling them with success in a pretty small geographic market, so my guess is that they work pretty well.
Having said that, your points are well taken.
Thanks for the kind words Cheffo.
I like to build things different. There are plenty of old full size cabs available so why try and compete with those. Someone is going to see an old cab for $100 or a new one for $1000. People who don't know or care will buy the cheap one. Now if you have something unique, then you instantly get their attention. The only time I build a replica of an 80's machine is if someone asks me to build it. I don't build those to have sitting around because they just don't sell as well.
Today I am delivering a skinny one of these to a local Burger Bar who buy these from me for their stores. Why? Because floor space is an issue.

Here is one on site:

I have built it in their colours and used their logos. Now if it were only full size cabs then you would have this problem.

Full size cab vs Skinny. LMAO, you make the choice. Yes the backs of them were lined up level.
I have several 80's machines and I love the designs, the smell and the way they play. But to replicate them in todays market is business suicide IMO.