You're still not listening. I did not say 'only subscription games are good', or 'F2P' is bad. But when a game that was subscription-based goes F2P, that indicates it wasn't/isn't performing at a level where it can survive off subscriptions, meaning the choice is F2P or shut down entirely.
Or that those running it figure in todays market they can make more by changing it to a dual mode system.
The road to success in modern MMOs is F2P right out of the gate paired with a premium/cash shop.
It does seem that way at the moment. But given how long an MMO takes to make (several years? more?), when the current ones you mentioned were envisioned, subscription models were the name of the game. Changing the game model while making it is likely to add who knows how long to the release date, and there's always going to be the push to get the game onto the market.
Is it better to get it going and add stuff in, change stuff, over coming months, or delay it by those months in order to add more in, or change the format? At least if it is released, you have income coming in for it, even if it isn't perfect. And let's face it, no MMO is ever going to satisfy everyone.