I do concede that Docker and git are not easy technologies. hey can be confusing and they have a learning curve.
Well that’s the thing. You want SuiteCRM to not have the nerd stamp and instead appeal to everyone as an easy to manage system without having to be a super techie person.
By making the system easy and user friendly to manage it will attract more people and organisations will also use it because of exactly that reason= its easy to manage and use.
Maybe because most CRM systems isn’t open source is the main reason… 
and since it is not available anywhere yet then you can’t see the demand either.