"The income share agreement has no interest. It's a flat percentage that goes away once you've reached the $30k payment cap, you've made 24 payments, or after 60 months of deferred payments (even if you haven't paid us anything)."
But you wrote in the article:
"Students with no safety nets experience real financial pain from the nine-month hiatus from work, in addition to the looming dread of possibly having to pay Lambda $30K one day."