Well, as long as their license servers stay up. It needs to phone the mothership at least once every 30 days or it stops working. So if the company changes hands (like it did a decade or so ago) you could lose your license (I believe those not on maintenance at the time were granted a truly perpetual license, but one that was forever node-locked to the machine it was installed on, so not really perpetual). I detest rental software and anything else that holds the files I create hostage.
Still using Alibre, for the time being...
GsT