So, they basically say: we cannot pay back in a timeframe that's longer than our whole existence.

Sounds like somebody tries to get a lot of money for AI and won't be able to ever really deliver.

Proper German phrase: https://de.wiktionary.org/wiki/jemandem_geht_der_Arsch_auf_G... And the translation of a similar spirit (but not literally): https://en.wiktionary.org/wiki/jemandem_geht_der_Arsch_auf_G...