We definitely promote performance as a primary (and a half) concern. Mainly because the alternative is throwing more money at servers and/or dealing with disgruntled customers. I wish we dedicated more resources to it but we also don't ignore it.
Oh! yes... certainly that was mi experience too. I was referring to frontend... where you won't pay for the performance, but your users will (by having to upgrade their compures and/or just suffering it)
