>There doesn’t seem to be any lesson-learning happening...

Which would indicate that creating jobs was not the actual reason for the grants. Given how trivially easy it would be fix the problem (simply make the grant contingent on the creation of jobs, otherwise it converts to a loan), the real purpose is probably a matter of generating headlines and raking in campaign contributions (with occasional full-on kickbacks probably happening as well). All of which it apparently does well enough that politicians continue to do it.

Correct, reporting this is doing nothing to stop it. People don't directly see the impact of it on their paychecks or budgets so they forget about it the hour after they read about it. The next politician can do it without fear of reprisal

it’s almost as if they are just lying about the purpose and doing it for some other purpose that it is perfectly effective for