maybe babysitter crisis is co-mingled with the shidduch crisis? With such tremendous growth, B’H. Bli ayn hara, there are less of 12 yo babysitters than of 1 year babies, so babysitters charge more.
And, there are less of 20 yo morahs (mothers of those babies), so they can charge more for teaching 12 yos who babysit 1 yos, and thus can afford paying more to babysitters.
And there are less of 40 yo parents of 12 yo and they are all, B’H, learnt well not to use pieces of aaaron Kodesh to sweep the floor, so they can’t afford to pay the 20 yo morahs who teach 12 yos who babysit 1 yos, and that is where the crisis meets Reb Ponzi C. Gadya.