I can't say how much effort is required to make EIAS dongle free, but from an end user perspective, it's outdated and a PITA. No system is perfect, but if the dongle breaks or gets lost, that's at least 1 week waiting for a replacement, most likely more, especially when you are on the other side of the world. That's at least 1 week without being able to use the software. If you have a server activation system, and the server goes down, then maybe you wait a day for it to be sorted.
formz and Lightwave have made the move to dongle free, and EIAS should follow suit. I don't buy the idea that there will suddenly be an explosion of illegal versions of EIAS.
The 3D world is very different now from EIAS started.
My 2 cents.