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.
You don't want to minimize students per teacher, you want a healthy number of students per teacher. Class sizes are not optimal at 1. Below some minimum class size (which varies by age group) there is no benefit to further reduction, and sufficiently low numbers can be harmful. That's to say nothing of the additional cost of that labor to achieve such faculty ratios.
I don't entirely understand the fetishism of expertise among a certain segment of society. Don't you realize that most of all teachers and other educational institutions are staffed by those who would be considered nominally experts? And this has even been taken to the next level by widespread adherence to a national curriculum (common core), again composed by even greater ostensible experts. And all of this has been complimented by the 5th highest spending per student in the world. And the result? Educational outcomes are falling off a cliff.
Obviously this isn't to say that anti-expertise is the answer, but rather that motivated people of reasonable intelligence and objectivity, regardless of expertise, are a [measurably] excellent source of value in just about everything. And, by contrast, expertise itself does not guarantee good results nor effective performance, especially in the context of other issues that might otherwise impair performance like large class sizes, minimal motivation, poor work environment, etc.
[1] - https://www.researchgate.net/publication/291335232_The_Effec...