Are you taking yourself serious even?
Also, Squad would more than likely let everyone move over to Steam. But you may want to look a bit closer. There is another party involved - Valve.
Imagine you have store - as big as it might be - and someone else comes in "Oh, I will just put these packages into your shelves, my customers will come here frequently to pick them up, please make sure they are only taking what is theirs, and clean the shelves so they look nice, and obviously you will not get any money, as they are my customers, my product and they already paid my company for it! Have a nice day!"