When the SHTF many folks and many, many threads about this topic were spawned. Overall a plan was made to make us all future proof against the day Splat could no longer be activated on a new system. That probability is now almost vanished with very few unbelievers hanging around.
But from what I remembered from those threads here is the survival list of things to do:
1- Download all your products and copy all the serial numbers, store this in 10 places and on a desert island.
2- Install Splat on every available computer and activate. If possible on multiple OS. W7 and W8.1 as example will not foreseeabley do what W10 can do and trash things with an update.
3- Do not loose your Pre Splat copies of Sonar, example my x3e is server proof. Forever.
4- Save all your projects in different formats like MIDI. A midi file from 1983 will still open in any DAW. It would seem this will be tue in 2023.
5- Bounce/freeze all your midi tracks to audio and export as stems.
6- Demo all the other DAW's and learn how it works and experiment with transferring projects NOW before it's too late. If you find one you like, buy it or keep it in mind for the future and watch for deals.
Following this plan there is no 100% guarantee that nothing will ever go wrong in your studio, but it sure will take away 99% of the probability. If that isn't good enough for you then don't worry, you are obviously a stressed out dude and you will die young anywho :) Ook.