I realise this may be a marketing exercise but, as a LR user since the very first public beta, I do not need 1Tb storage and would discontinue my subscription if the price doubles. I suspect there are many other people who feel the same.
Or you could continue to store your photos locally, then you never need the 1TB. Buy a 1TB drive, backup your photos/catalog, (that should be your 2nd backup) and keep them offsite (friend’s house, office, wherever). Update that backup monthly. It’s cheaper than buying cloud storage!