As far as I know club income from TV rights is significant only in the Premier League. Therefore, Frankfurt would be happy to remain in their current position only because 4th place provides a direct ticket to the Champions League where the club's income is significant. But it will be difficult for them to hold this position as Dortmund are behind, plus Union Berlin will probably get back in business and play well again.
Agreed, the income in bundesliga was not comparable with EPL. Here was the actual data about that
https://football-finance.com/1-bundesliga-tv-revenue-distribution/I meant the income that was coming for any club in the bundesliga was not a lot. Frankfurt's income was not so big like dortmund or bayern but the gap was not too high. Champion league was giving a very significant additional income. that's why any team wanna try to take the top 4 if they were not able to take the trophy.
Thanks for the link! In fact, I am surprised by the specific numbers, because even for Bayern, which are consistently successful in European competition, the income from the Bundesliga is higher than from the Champions League. Still, success in European competition is of great financial importance, as the difference in Bundesliga revenue between first and tenth place is only 21%, and the difference in European competition revenue between first and sixth is 200%.