1. What happened with TERA is they started as P2P with no cash shop, had a decent amount of subscriptions that not very slowly started leaking away, decided to add a vanity cash shop (while it was still P2P) to try to "make up" for the lost subscriptions, the remaining players felt ripped off by the cash shop and saw the addition of a cash shop as a sign of failure and impending switch to F2P and promptly left, TERA temporarily shuts down and switches to a F2P model. Back when TERA first added the cash shop, En Masse tried to say there was no plans for the game to go F2P and yet it went F2P only a few months later.
2. You do not work for these companies, you have NOTHING to gain from the addition of a cash shop other than less money in your wallet should you decide to waste any on a cash shop. So I've got to ask why are you even suggesting one? So far SE has added nothing more than an equivalent to the server transfer services, character recreation, and something similar to how you could pay extra for mules in FFXI, all of these being services that have existed in P2P mmos long before cash shops were even thought up and yet for some reason you think that their addition is a sign of "things to come" that make a cash shop inevitable.
3. When people have witnessed first hand that the addition of cash shops cause a loss of subscriptions in a P2P mmo (and have even been part of those lost subscriptions themselves) then yes they have more than enough reason to believe that a cash shop will inevitably lead to the game shutting down or going F2P.
