Is FFXI getting a cash shop?

[Shirai]

Depending on the success of the cash shop in XIV XI might also see something similar. In the end it just means extra money for Square Enix and its shareholders.

That said, XIV is full of little vanity items that XI doesn't have and likely won't get either, like the minions, extra mounts and equipment dyes.
On the other hand XI has had a plethora of extra in game bonus items that came with the purchase of specific merchandise like the Tidal Talisman and other things where several world regions were excluded because said items weren't available for them. (Australia and Europe come to mind, but a lot of stuff was also available only to Japanese players)
SE could decide to open a little shop for those items, we don't know.

All in all, I've said the same when I still played XIV when they opted the idea there, as long as they aren't adding any pay to win items/options and/or are starting their own "legit" RMT business I won't object.