Anti-Gentrification Activists vs. Logic

The “reasoning” of anti-gentrification activists who support growth controls is the following sillygism (a reasoning process that yields a delusion):

• Landlords want to build more.
• Landlords want to raise rents.
• Therefore building more will raise rents.

This is a classic example of the fallacy of the undistributed middle. “What landlords want” is the middle term that isn't distributed.