I went through an acquisition of an unsuccessful company. My employer created a shell which is what was acquired. The old corporation wasn't acquired and existed as an independent entity to wind down contracts / deal with the acquisition hold-back, etc.
If eg smyte was out of money, this is plausible. And all of a sudden no-one was there to run the old corp.
crunchbase says they raised a $4m A in Mar 2017, but linkedin says they had 23 employees. They could burn that in 1.25 years with 23 employees and have hit a cash crunch.
I have no knowledge, just speculation.