Why are so many Infinity IRS beta systems for sale the past year ?

Why are so many Infinity IRS systems for sale the past year ?
What are the Infinity IRS beta owner upgrading to ?
I still love my aging Infinity IRS beta system. I am still pretty happy with it. After overcoming the "12"woofer surround" issues solved by doing it myself after looking at all other terrible options . Now having concerns with my ageing amplification , my Rowland 7 are still great for the base especially after 2h warm up the pass labs 250 is at time a little "sickish" had it check but still just ok on the re Ch. So I looked into some alternative amplification but kind of skittish about whats available since the panels can drop to very low resistance and suck the live out of many amplifiers.
So after that, is there a new alternative speaker and amplification that makes the IRS beta owners move in a new direction ?
I have not heard to many set up that would make me look for a new system.