But the language of the communication (ie "compatible", disks in old products will continue to work) sounds very like a move like HP printers.
"We want recurring revenues and we are now in a leading position, so we will ensure to make a margin on disks used with our products"
At first it is soft, ok it works with "compatible" drives, but they block the features in software instead of providing them as "best effort". Then, "in the interest of the users, and security blabla, non certified hard drive will straight refused by the system".
That is really hard because that was the interest of geek products like Synology to be like your own computer, that you can easily ticket and use whatever disk in whatever configuration that you wanted, even if at your own risk sometimes