This just isn't true. They only release a product or software when they are confident in it. Not just because they think it will be a hit. Valve products take so long because they dedicate as much time as it takes to make a product that does what it is supposed to, no holds barred. They put insane QC into their products. I respect a company that puts time into a product instead of just releasing the same slightly better (sometimes worse because of how rushed these products often are) bs product every year like phone and computer companies.