Traditionally, new home builders are able to prevent a whole host of competition by owning the very rare land resource. If we could create competition by manufacturing housing in a new way that's disconnected from land ownership, that competition for the building products and the homes themselves might trigger a more affordable housing stock.
It doesn't address anywhere near the magnitude of increase in land value that's the big issue or the taxation built into municipal fees, provincial fees and tax, but I do think competition around manufactured product will make a positive impact on the overall affordability of new homes.