I wouldn't feel bad for them, the type of pros who buy the top-spec Mac Pros are the type that charge a production company a few hundred bucks a day for it's use, on top of their daily rate (you know how much editors make in Hollywood?). Or, a production company who profits off it's use themselves with completed-and-aired shows purchased by a network. That's then purchased by you. It's a tool that'll pay for itself many times over. And they're also the types that will wait until a new technology is fully developed and adopted before transitioning, so they'll be years off.
If anyone purchased a 50K Mac Pro who isn't directly profiting off it is either crazy rich, in which case 50K isn't a concern, or are just simply crazy (in which case 50K isn't a concern for them either, nothing is).