Large land owners wont likely be able to get the most out of their lands and will likely sell or rent land that they cant get the most out of with the cards they have which will help the market and bring more people into land play.
At least this is the way i see it. We wont know for certain until land 1.5 actually happens.
RE: SPS Governance Proposal - Implement a Max Base Production Limit for Land Plots in Phase 1.5