But some people manage to get on the upswing of that cycle, but many many get caught on the downward spiral.
With every apsiring mover coming in the rents and house prices go up for others so nothing is solved, just moved.
And just because you did, doesn't mean everyone can. If you don't have the education/ capability to rise above a minumum wage job it can be very hard. Many people have extended family to care for as well so moving away would mean that person becomes dependent on the council/ state.
And another thing to look at the effects of individuals, but another when you model the behavour across millions.
Being a teacher and moving away is a poor example to use as clearly not everyone can be a teacher and with it the improved prospects.