Parmandur
Book-Friend, he/him
We are talking about a company that has Monopoly as one of their basic moneymakers.rules changes did prove fruitful, after the prior edition had fizzled out they reliably resulted in large sales until they too invariably declined and fizzled out.
The only difference is that 5e has not fizzled out (yet?), once it does I expect drastic changes, until then they would be stupid to have them
They do update the rules from time to time, but it remains Monopoly even when they release a fresh box with new art.