I remember a startup that had a great product that would match you, a person with a questiojn about a topic, with an expert on that topic, over gChat. Google acquired them, and they immediately were told they had to port their infra into google3 and borg. This was a short window where the new hotness was help-over-chat. They rewrote their whole system and then Google told them they didn't actually need the product (a…
"Licking the cookie" has to be the single most common phrase that came up, but my general sense was that both Google and FB are full of weasels, only the latter is much more honest about it. Neither is particularly desirable.
EDIT: Feel the need to qualify, there is a lot of superb technical work there on many many teams, but it is the co-ordination of that (especially fights over gatekeeping that which goes forward) which is a total mess. The resulting strategic blunders and failure to execute create huge friction with the outside world.