I don't agree that mums should be paid to do something that's natural. That said I know many mums that are unable to do so, being a bit personal now
When Laura was born i had big issues getting her to latch correctly and had major pain wit blisters etc, but also she was a bigger hungrier baby. So what i did was feed her formula but also myself too, she never went hungry but it meant that i could keep trying, i managed to feed her until 6 months with my milk and formula...look at her now, she is healthy hardly ever poorly and is a lively 5 year old.
But the incentive should not be oooo i could get 200 quid from this, it should be this is my baby i'll do my best for him/her regardless of how they are fed!
(fyi) Laura was born a nice 10lb 1oz