Yup it was planned to be, but SE canned it (COVID kind of put a stop to pre-production but SE kind of lost interest doing from then on sadly). This article details the reasons for the cancellation of the project.

As for Amazon, I think they did an amazing job with the Fallout TV series, so FFXIV would have been in good hands as a live action TV adaption. Generally as long as the production/writers etc actually understand the source material and treat it with respect, then the result is usually spectacular. Unfortunately all too often this proves the exception rather than the rule.