[krisoft]

> There was a failure

There are failures which only cost the company money and there are failures which risks lives.

By all indications this is the first kind. It would be entirely different situation if the rocket thumbled out of control and hit the sea in the wrong spot. Then a grounding would be warranted. Here by all accounts they flown to the right spot but did not stick the landing.

> This is what we expect from every plane crash too, or did I imagine the existence and purpose of the NTSB?

We would not ground the whole fleet of an aircraft model if something adverse but expected happened to one of them.