That argument makes no sense to me. Open betas are incredibly common with MMOs nowadays. Why would FFXIV be any different?
SE has every possible reason to want as many people buying this game as possible. The real money is in subscription fees. The only way to get subscription fees is to sell the game to people in the first place.
FFXIV:ARR has a lot more to prove than most MMOs. Requiring people pay for their first month on top of the purchase price is just absurd.