In my opinion, those companies who try to rely on the old game of preventing the investor from making an informed choice, are going to find themselves increasingly marginalized, and find it difficult to survive.

I 'm  disabled and retired but that won't prevent mefrom becoming  successful.

Either way it shouldn't be a concern, and he can't do anything to prevent it.

But in the future, prevent the existing landlord from renting to anyone else while in escrow.

No amount of due diligence, screening turn key companies, or interviewing property managers will every prevent this maxim of real estate from occurring over and over again. 

The fear of the unknown by the "guest" is what prevents 100% occupancy.My feeling about Portland, and other communities having difficulty embracing the sharing economy, like my HOA, has to do with the horror stories that @ Marcia Maynard mentions.

You have 180 days from the close of your sale to complete the purchase but it is usually the 45 day period that prevents people from completing a successful 1031 exchange.While you cannot close on your purchase until after you close your sale the order you go under contract does not matter so what we recommend is that as soon as a client feels confident with their sale happening they start shopping for their replacement property and put it under contract as soon as they can maybe even before they close their sale.  

I read & talk to BP that the best way to prevent acceleration & due on sale is just to tell the bank i'm going to pay for the pre-foreclosure seller in exchange for his property title.

My thought is they are like all items you need to take care of them and in some cases you need to do preventive elimination. 

I had my attorney draw up papers that might help me with this to prevent any lawsuits but in it still can happen.