For what its worth:
If you live in the state of SC and are willing to come to Richland county, I can find you a free spay/neuter. I can find you low cost spay/neuter. You should not have to pay more than 100 dollars in this state if you know where to hunt.
There are programs available to the diligent but the problem is those who OFTEN (OFTEN) have unaltered dogs are the uneducated ones who aren’t in the pet stores, the vet clinics and the shelters that promote these things.
Current billboards around the city here now are “Neuter your dog, its more manly without balls!” (I’m paraphrasing). Guy holding a puppy.
Its a combination of lack of education, the predominance of poverty in rural and often hunting areas (compared to many places farther north where poverty exists in portions of cities, where owning many dogs isn’t a viable option, compared to living in a trailer in the middle of nowhere), and misconceptions about ‘manliness’ in an unneutered dogs specifically which was aforementioned.
This topic literally drives me to drink living in an overpopulated dog area with euthanasia through the roof and people dumping dogs every single day. I am fighting a battle I will never, ever win…but how do you stop?