And there’s no Church discipline, why?
The discipline has come from individual Jesuits losing their teaching licenses, Jesuit institutions losing their status as approved institutions, specific Jesuits being laicized, and a number of other measures.
However, the Jesuits are free to elect whomever they like as their SG, and if the Pope does not like their choice the only authority he has to interfere is to suppress the order.
That is a very brutal step for both the loyal and disloyal.