He claimed that costs would outstrip our margins as we grew. I have to assume he just thinks this is how startups work, because most of the costs he specifically brought up don't actually exist in our market/business model. In any event, if you have an instinctively negative and suspicious reaction to profitability, then as a business person, I want nothing to do with you.
It's a play on "nobody ever got fired for buying IBM," the original FUD. It relates to that person seemingly thinking that a high run rate is de rigeur. Like IBM in the 60-70s, Heroku is among the costliest providers.
