Or move to a different city.

I do not believe that it is a bad thing for the home to be a less attractive investment.

Certainly, having something like one out of five homes being bought up by investors simply for the investment seems to be very skewed - something along the lines of old coin collecting or acquiring art.

Housing has a specific purpose and if the supply is so downregulated that it is losing that purpose something has gone wrong...

It definitely needs to stop being a thing. For housing to be a worthwhile investment it has to become less affordable to future buyers. That applies not just to institutional investors but families as well.