Right, not all clubs can fulfill the requirements for the 1st Bundesliga license. Also, FC Liefering is not eligible for promotion because they are a Salzburg farm team. A couple of seasons back, I was assessing the motivation of the second bundesliga teams and was surprised that a bunch of midtable teams were aspiring for promotion despite being adrift of the leaders by many points. Here's an article that I found back then which was explaining the situation:
https://www.skysportaustria.at/lafnitz-klubchef-loidl-bestaetigt-wir-suchen-um-keine-lizenz-fuer-die-oberste-bundesliga-an/