This isn't new. In fact it's almost in the realm of years old.
The reason we scaled back from 5 is that after we looked into people that were actually using 5 it was more often than not they were blatantly abusing the license agreement.
At 3, our license agreement is still basically the best in the industry. Almost no people have 4+ personal computers. If they do, in general, they are a business and are abusing the previously overly generous 5 license grants. We made the business decision to stop that from happening by scaling back to 3.
We've heard all kinds of complaints about "well I had 5 and now I only have 3", but when they get on the phone with us and we start looking into it more often than not they are just angry that now Bob, Joe, and Ruth can't also use the software any more. That's just too bad.
It's unfortunate that some people that either didn't read or didn't care to follow the license agreement ruined it for everyone, but at 3 you are still given a pretty ridiculous amount of flexibility on when and how you want to use your license.
As a software company we are directly affected by peoples' negligence or disregard for the terms of the licensing. Our choices are to take steps to prevent that from happening without unduly crippling everyone or to just raise our prices. We don't feel that allowing you to have 3 simultaneous installs is unduly crippling, and now we are in a better position to keep our prices lower. Additionally, if we didn't feel it was significant enough to warrant addressing, we would have left it alone. But after hearing over and over from customers that the shop guy and the marketing guy can't use the license any more, it was time to put our foot down.
Max