Why are you talking about "P2W".

Win what ?
You can clear any type of content and be poor.
The game gives many way to get gear easily without spending a single gil.

Doing roulette, dungeons and quest are a sufficient source of gils to allow repairing, tp and such primary function.

So sorry but, no, the game won't be suddenly a "pay to win" because you'll be able to purchase money.

If one day, they sell Gear set with an ilvl above the one in game, then yes, that day, it could because pay to win.

But not by bying money.

HOWEVER, aside of that part.
I'm not particulary into that. I prefer our current system. It's fine as it is. There's already plenty of way to make money easily so...
No need to copy everything Wow does.