This is one example of an area where economic incentives make it difficult to shift.

  - There aren't that many people willing to pay for such software, but those that do *really* need it, and will pay quite a bit (passing that cost on of course). 
 
  - The technical domain knowledge needed to do it properly is a barrier to many
 
  - It needs to be pretty robust

As a result, you end up with a small handful of players who provide it. They have little incentive to modernize, and the opportunity cost for a new player high enough to chase most of them off to other avenues.

I think the main way this changes is when someone has already spend the money in an adjacent area, and realized "huh, with a little effort here we could probably eat X's lunch"

Beyond that you at most get toy systems from enthusiasts and grad students (same group?) ...