And the cycle of gentrification has shown us that it's the low-income high-creativity people that raise the standard of living in a neighbourhood. Once all the students, musicians and architects-working-at-cafe-and-having-too-much-free-time are driven out by the doctors & architects-with-jobs-and-kids, the previously hip community sinks back into boredom.
And in practise, most of the "students, musicians and architects-working-at-cafe-and-having-too-much-free-time"
will turn into the "doctors & architects-with-jobs-and-kids", so it's really the ageing process that drives this process. Later the "doctors & architects-with-jobs-and-kids" will turn into pensioners, and when they move on to the next world, the cycle restarts. So it's not some kind of nefarious scheme that 'drives out' the allegedly more creative people, but rather communities evolve around ageing and family creating.
Gentrification is often driven by young, gay men and "creatives" - communities who cluster together and want affordable houses. Once the neighborhoods is "cleaned up" and full of hip businesses, the chains come in and the neighborhood turns "family friendly". Finally it reaches that "doctors and architects" state and it's too expensive for the vast majority.
