Let's also be real though. This was a conscious policy decision made by school boards across the country.
G&T programs used to be what school's public and private marketed. Now the public schools where I grew up don't even offer AP classes, and a huge portion of their budget now goes to special education.
Why did we decide we have the resources to spend on the lower end of "special" scale but not the upper?
Anyway, to answer your query, my belief after decades of observing the education system here (BC, Canada) is, politicians and decision-makers basically feel that smart kids have a huge advantage and they don't need the help. They will succeed and be useful members of society whether we leave them for dead or help them thrive. So... the dollars can be allocated to "those who really need it". I have heard this overall sentiment shared over and over and over, as far back as when my parents and I attended city council meetings appealing for ANY sort of "gifted" program implementation, even a tiny hint of one. The answer was always "find a private school", "I heard there's this virtual school you can attend on the computer", "we'll think about it", etc. I honestly don't see this changing anytime soon.
I could say way more on the subject but didn't feel like posting much more of such a personal topic. Happy to chat about it more with whoever, though.
If one goes through life expecting people they encounter to care about them, they'll be bitterly disappointed. Some of my teachers were nice to me, and would go out of their way to help if I asked. Did they really care about me? I doubt it. They were just good people. The rest of of my teachers were pretty indifferent. A couple actively disliked me (my own fault).
But what I wanted was not caring, but for them to do their job.
Welcome to the “parents of gifted children” club. I agree with the previous commenter that G&T probably isn’t the right place for your kid, at least not for now, although you might not have any practical alternatives.
Let’s be real though: one need not invoke resentment-laced arguments about fairness to see that public schools just do not have the resources to properly educate (upper) outliers. Pretend you had a child whose growth curve put him on track to be a future 7-footer—you might consider investing in some private basketball coaching. Different gift, same idea.