In the US we already give low income people subsidized or free daycare.
The real issue is how the system didn’t support the middle. If you are broke you get tons of support - healthcare (Medicaid), food (SNAP), housing (section 8), and a myriad of subsidized options for everything, from discounted utilities to childcare. But be middle class and get very little, except paying taxes to support the poor to get everything. Huge driver of political division across the West
Well, they know the middle will work no matter what, so they may as well squeeze them.