https://www.kotaku.com.au/2017/08/a...0-final-fantasy-15-players-finished-the-game/
EDIT: No these numbers are not from PSNProfiles, lol. Read the article.
---"There's a certain metric we use to judge success," Tabata said through a translator. "After one month from the game's release, how many players had completed the game, seen the ending, was actually very low. Only 30% one month after."
"After that, as we continued to go back to the game - we promised this before release, we're not going to release it and be done with it - and I feel we very much have achieved that. Because recently we checked that metric again, and [the completion rate] is now up to 60%. That really fills us with a lot of confidence, and it's justified our approach, so it's something I'm very happy with."
Another way to read the metric is that around 40% of people who bought FF15 still haven't finished the game. That's a fairly cruel take though, as many players buy games and never finish them.
EDIT: No these numbers are not from PSNProfiles, lol. Read the article.
This is Tabata stating the numbers, not Kotaku. From the article:
"In an interview with Hajime Tabata at Gamescom, the developer revealed that the company's internal analysis showed [...]"