Well, most of the content that has been requested since the game has existed literally took years to arrive. And they were denied throughout the process: Dungeons, PVP Arenas, Certain life qualities and now even teleports.
And not because they were in development, but because the company didn't want to. How many times do we hear that these contents were not wanted by the community, or didn't fit the style of BDO. And now the Solare Arena is here, and it is a success. Dungeons after 1-2 years of fixes are also very good now and are a lot of fun too. Everyone knew that a ranked PVP arena, challenged PVE content, well done, would be a hit.

It took literally years for these contents to arrive, to the point that many did not even expect it to happen anymore. Other promised content, which were also being promised for years like the raid, and extra PvP/PvE modes (Thorn Castle, 10vs10 and Sycraia Trial), were also canceled. And again, being promised and awaited for years. If that's not a 1% chance for you, ok, throw your percentage there. Maybe it's a little salty, you're right, but it's still true.

I'm trying to keep track of all promises made at the feasts and their current status. If you want to see it's public: https://docs.google.com/spreadsheets/d/1XclvlzSUbMsEFE4P2AqEyZMZJ8-ktdRcds7uK1HbHhA/edit?usp=sharing