"the biggest problem was that it ends up providing the most value as a sales/collab tool between clients and developers" That's not really a problem, rather it

"the biggest problem was that it ends up providing the most value as a sales/collab tool between clients and developers" That's not really a problem, rather it proves there is a valuable use case for it. Depending on the process architects have varying power over the overall project process. This can vary a lot between regions, companies and domains (i.e residential, offshore, bridges, etc etc)