And getting paid considerably less. You're almost certainly providing proportionally more for your pay.
A childcare provider can register and only look after 1 child, usually, but wouldn't because they want/need more income.
Presumably nannies (careworker for children from a single family) are registered childcare providers where you are; would a nanny be subsidised able to get paid with a subsidy?
It's akin to education - the general goal is to minimize the number of students per teacher, not maximize it.