moog is selling very generic circuits, there's no intellectual property at stake, so rip off is I think is quite an exaggeration. The original moog pioneered the space, in less than two decades lost popularity in the face of newer ideas from competitors, and sold out to a big company that milked the brand name for awhile and also wanted to shut it down. The original founder got the rights back and basically pulled a Harley Davidson, made a nostalgic brand with premium pricing, "made in USA", employee ownership, etc.
There's a huge industry of competing synths, and moog's strategy of sitting on big fat brand margins gave them a cushion to old school, but also kept their nice sounding products out of the hands of young musicians. Young musicians getting started are the quintessential "starving artists". Behringer said "hey, these are generic circuits (not much more complicated than logic gates) and tons of people who can't afford them would like to use them. Modern scaled factory manufacture can bring them to the masses" and as a result they are very popular.
laying out the knobs in similar order? I mean, it's File-Edit-View and Cut-Copy-Paste, and laid out like the 6 strings of a guitar...
moog invented the ladder filter, it was amazing and unique, they patented it and enforced the patent. That was 50 years ago, the patent has expired.