So just why does our PCT delay support for IVF?

A very interesting piece of research that confirms the link between Down's syndrome and childbirth later in life begs the question - why on earth does our PCT delay support for those needing assistance until they are at an age where the statistics show they are so much more likely to carry a baby with Down's syndrome? The risk of having a baby with Down's syndrome is one in 940 for a woman aged 30. But by age 40, the risk rises to one in 85. Surely our PCT should see the manyfold benefits (of which a reduced risk of Down's syndrome is just one example) of childbirth at a younger age, not just look at their Balance Sheet?