Well you have two different situations, depending on who is attempting to do the buy out.
Assume that it is formerly-known-as-Paragon. They need something up and running within days (or a couple weeks at worst) after the servers go dark so they have a cash inflow to keep the new studio going. Any loss in player base is going to be bad.
Assume that it is...oh, for the sake of argument, Valve. They can afford to sit back and wait for January 1 as the value of the IP sinks faster than the Hindenburg. They already have a cash-rich and thriving business, and solid advertising budgets, so they could, conceivably, weather the loss of the player base entirely and just do a cold reboot.
A crowd-funded purchase of the IP would be better off waiting as the value degrades, but would run into a mass quantity of other problems other people have already described far better than I could.
I suppose we will know more after Nov 2, when the gag-orders come off Positron et al, what formerly-known-as-Paragon thinks they can do.