As has already been noted, I immediately thought of Michael Palmers use of the phrase. Then I Googled it and realised you didn't mean this at all.
Let me relay a little story which might help to put this in perspective:
Last year I was concerned to see that a local farmer had ploughed up the headland I used as an access to one of my apiaries. When I asked why he had done this, he said they were putting a 15 metre border of wild flowers around each of the fields. That's great, I thought. My bees would be right in the middle of it and I'd see supers of wildflower honey.
Well, things didn't work out that way. Something went wrong. Instead of beautiful wildflower borders, the seed failed and he had to top the grass that came up instead. This was not just a loss to me but to the farmer who had invested heavily in sowing this "crop". It is possible that he will try again next year but the point of my story is that farming is a risky endeavour. You can do everything right yet still fail. How many of us would put our livelihood on the line to do this?
How does a "bee bomb" compare to a 15 metre border around all the fields? I would say it is very little. Although, if everyone did it, it would mount up. Obviously at a cost though - the company will "ride the coat tails" of this modern phenomenon of trying to turn back time and put something back into the environment that has been lost.
I don't want to end on a low note though. I noticed a bumble bee had made its nest in one of my old nucs at the start of Spring. I left it. Now I have bumble bee workers trying to steal food every time I open a hive. Nature has a way of recovering all by itself.