No they don't. Builders are desperate to get homes off their inventory. they dont speculate they want CASH.
We need to continue to build more, affordable housing in desirable areas near public transit, and break the current cycle of the same companies buying as building.
What companies are building and buying?
I’m not familiar with an builders who are interested in holding properties any longer than necessary.
This makes sense only if we assume laws of supply and demand magically doesn't work for housing.