Gabe Newell knows that any potential buyer will run Valve into the ground. Thus he already promised too long ago that he would never sell or let Valve go public.
Considering how many game studios that Microsoft just killed off in the last 3 years alone; they're never going to be worthy of buying Valve.
Junk science article.
All discoveries use some element(s) of the scientific method.
The entire method in and of itself isn't required to be 100% rigorously applied 100% of the time. However, the method is a starting point and does lead to discovery over time.
While it helps to apply the method to ensure clean and proper discoveries which can, hopefully, be reproduced and investigated, the fact that not all sciences or discoveries apply it rigorously is largely insignificant.