It's seem to have stopped since ZIRP has ended and Bezos has moved on but for awhile the AWS profits seem like they were feeding an ever growing conglomerate of disparate businesses with the intent of owning every market. [1]
Such actions feel somewhat similar to Microsoft using its dominance and profits from Windows to give its browser away for fee.
This ads suit seems like a distraction.
That said I'm not particularly anti-monopoly and have a Prime membership - mostly just curious.
[1] Anti-Trust Paradox - Lina M. Khan https://www.yalelawjournal.org/pdf/e.710.Khan.805_zuvfyyeh.p...