Prop. 13 means that a commercial renter can rent out the land to one tenant after another virtually forever without the taxes going up very much at all (way below inflation). At some point it gets to a point where it is never economically advantageous for either renter or landlord to ever have the landlord sell... the situation is only disadvantageous for the city/community (which is getting far less in taxes than other places).

Remember that companies never die of old age.