The money would be better spent on more support for all mothers to breastfeed. My own daughter is struggling right now to bf her newly-born first child. Support is available but so much of it is contradictory, even from midwives in the same hospital! One told her to do X, then the next midwife said 'Oh no, don't do that, do Y,' instead. My poor Dd doesn't know if she's coming or going.
Only 5% of women are physically unable to breastfeed. That many more women have been/are unable to bf is probably down to lack of support and knowledge of the right techniques, because we no longer live in a society where is it something every woman sees going on around her.
Surveys show that 80% of women who give up breastfeeding early, do so reluctantly. Women want to breastfeed, they're just not given the tools to enable them to do so. I can't see that money will make any difference to that.