It's disingenuous to pretend like the landlord is the only party with any control. Landlords cannot remove a tenant at "the drop of a hat" by any stretch of the imagination, nor can they arbitrarily increase rental prices. Rentals usually involve a lease that protects the tenant from arbitrary removal and price modifications as much as it protects the landlord from unexpected vacancy. If you're renting, you should know when your lease is up and know that the landlord has the option not to renew and/or to modify the price. (If you're in California, you should also know that the new law punishes your landlord for trying to do you a solid and keep your rent stable across lease terms.)

On top of conventional lease protections, virtually every state has default tenant protections written into statute that can't be overridden by lease agreements, and that include a default implicit month-to-month tenancy term, providing at least basic protection from out-of-the-blue demands to vacate.

If an eviction must occur, it has to be conducted as prescribed in state law. Tenants overstaying or defaulting on their leases frequently can't be removed without 3-6 months of legal wrangling, which is no fun.