Because the limit cited only applies to students whose parents can get (federal, direct, and capped only by the school’s estimate of costs) PLUS loans, and yet is characteized as a limit of the impact of federal subsidies on school costs.
A cap that only applies where another unlimited federal loan stream is available to the same student is, well, not a limit at all, when discussing federal impact on prices.
The impact on prices is not just the direct, but the general understanding that private educational loans also could not be discharged in bankruptcy that was created by the Bankruptcy Abuse Prevention and Consumer Protection Act of 2005. Courts have started to push back against that but there are only a handful of precedents.
I'm interested in how many students aren't able to have their family go in on PLUS loans. As that is still a gaping hole to relying on the page and limits linked.
And that is the principal. With a short limit on how much of that can be subsidized, meaning the rest is accruing interest from day 1. Such that they amount you would owe will be laughably higher than even that number after your school. And that is assuming you don't have to then delay repayment for financial hardships.