"I disagree with uprooting a family for tennis or sending a kid to an academy.
Uprooting a family for just tennis usually creates a pretty dysfunctional family life and having a teenager unsupervised at an academy might lead to some good tennis, but not much else. Unless, your plan is to have your junior go pro."
You can't really make that statement. I personally don't agree with the academy approach or home schooling but I've seen it work and I've seen it not work. That's a personal family decision. However, if you can move, keep your family and a job allows you to relocate, that's a decision I have available from time to time given my profession . . .
"Where there is a will, there is a way."
I don't disagree but the odds are stacked more against folks in cold weather states/weaker sections and the data support that . . . it's just reality but it doesn't mean it can't be done. We're certainly trying and all the things you outlined are good and I agree (we certainly do them).