Indeed they are.
Check out this blurb...
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Original Source
FFXI broke even a little over 1.5 years after its launch. It will take XIV longer than that, obviously, as it's essentially been developed twice now and has a higher "break even" point. But if the game is solid and fun and keeps people playing, they can definitely break even and become profitable with XIV as well, without having to go the F2P route.
And let's look at the numbers stated... 1.5 years at only 200,000 players for XI to break even. It went on to maintain over 500,000 for several years. In other words, FFXI has been a major cash-cow for SE for almost a decade. Even now, all these years later, they're still hovering at around 300,000 players, so they're
still beyond what their initial "break-even" point was.
So, does anyone really think that hitting even 300-500k consistent paying players would be bad? I hardly think so.