Look at it from the perspective of the customer rather than the owner. When my apartment switches managers I see no difference. I am not forced to move to a different location, nor do I have people reordering my furniture or changing my lease agreement.

When Viaweb became yahoo store it's possible it got a lot more users, but I'd bet existing users weren't as happy anymore. They got shitty yahoo service.

Perhaps in this industry management companies just haven't gotten very good yet. More likely, the difference in scale breaks the analogy from the user's point of view.