Earlier quoted context omitted.
I agree that it would be better if Google applied the same rules to other vendors selling similar knives. They are entirely free to decide how you can use their service, there's nothing evil about that. Edit: To clarify, I've used knives professionally (diving instructor) and recreationally (kite surfer), but I fail to see the non-weapon use for a knife that is small (and therefore concealable) and also opens quickly…
It's also interesting that there is no effective difference between a switchblade and these "spring assisted" knives. Yes, the mechanism is different. But in both cases, you push a button, and the blade pops out rapidly. The very existence of these knives is clearly to circumvent existing laws regarding switchblades. This is entirely separate from the big-guys vs little-guys argument being made against Google.
Those laws should be circumvented; they are as stupid as laws prohibiting Bowie knives.