If there are exceptions, then there isn't a rule. Everything we do is best practices and guess work, there isn't a scientific formula to being successful, what

If there are exceptions, then there isn't a rule. Everything we do is best practices and guess work, there isn't a scientific formula to being successful, what works with X, probably won't work with Y. It's just a probabilities game, and by and large, 99% of companies can't approach it the same was that Google and Facebook did. (FWIW I agree with you, just not the way you phrased it).