So if I can't find the right idea in a month I should give up and become 'a lifer'?

I don't buy it.

The corollary of this is that every entrepreneur should be able to come up with an idea that will be a rock solid success every month.

It is easy to come up with ideas, but successful ideas (whether the reason for the success is being first to a new market, a better implementation of an existing idea, or whatever reason turns a good idea into a successful idea) are hard to come by.

Superstar entrepreneurs may be able to come up with such ideas with such frequency.

But if you can't, you should give up? I don't think so.