There will always be springers because shooters will realize, eventually, that springers hit the target equally as a pcp, but at a lot less cost.
I've always thought that pcp's popularity was born from the persons 'inner wanting' for a real powder burner but without the legal bit of ownership, more so with the magazine loaded pcp. This probably has the same effect as to trying to get more power out of a springer. It's trying to get, what you want, but can't have and making do,