To accommodate the larger loads from charging EVs landlords will need larger grid hookups. They’re expensive and utilities don’t just give those out, they build them to sell you more electricity. If none of your tenants own EVs (yet), the utility will still want compensation for their investment regardless. Who provides that is not answered nationally, but by state utility commissions.
There’s lots of parties involved to answer the EV infrastructure question, electrical coops, investor owned utilities, property management companies, utility boards, local, state, and national governments. They all have vastly different incentives and electric car users need them all to walk in lock step to provide adequate EV infrastructure. I don’t see that happening without a serious public mandate, and visionary charismatic leadership.
Even as a property owner, the wife's car in the driveway put mine in the street.