That's what arbitration is all about.
Are you suggesting that the Govt should force one way or the other?
As a commercial landlord I have come to mutually aggreable arrangements with my tenants - we are both happy.
Not all tenants are in the same situation as not all landlords are so the arrangement has to suit both.
One landlord may come up with different aggreements with different tenants as their situations will be different.
And the same applies to tenants, those with multiple sites may have different arrangements with LLs due the different LL circumstances.
So the change made to the PLA just forces them to abitrate - a reasonable compromise as far as I can see.