Imagine that, during an election campaign, the Government promises to extend the 45p per mile business travel allowance so that all workers can claim a generous amount of free petrol a week. They've calculated that this will be very popular with voters.
The workers are delighted and rush to vote for the Government.
After the election, the Government quietly approaches the petrol companies. "We'll only pay for half that free petrol. You must absorb the cost of the rest. You're not allowed to tell anyone and you're not to go charging extras. If you refuse to offer it, you'll lose business to the companies that have agreed to offer it.
We want the workers to believe we are a generous Government giving them free petrol or they won't vote for us again."
One company embraces the new rules and offers the free petrol to everyone (the owner is a friend of the Government). It takes the hit because it's a multi-national company and it can afford to hold out for now (it's also been well compensated).
The other petrol companies gradually go bust because they can't afford to provide the free petrol and meet their costs. They stop trading until that one company is almost the only one left.
Oh, now they've got the workers where they want them! They increase the cost of petrol, make up their losses and people end up paying far more because there is little alternative. The workers struggle to find petrol stations, where petrol is charged at a premium and withdrawn when their staff can't cope with the demand. The workers are expected to be grateful for anything they can get.
In a very simplified way, that's what's happening with childcare.
We warned back in 2015 that extending the "free" entitlement would actually raise fees for parents and reduce availability. We explained that the Government wasn't even funding the 15 hours adequately and asked where the money was coming from to extend the scheme.
We were ignored.