Say they sold the properties over 3 year period and could not sell the rentals together as a portfolio.Could they put the money from each sale into a DST then use the total to buy a expensive rental property?

Why would someone buy now and make little money for the chance that the rates will adjust later?

Your investment property - This you could do a 1031 exchange on and buy another property you intend to use for investment. 

If it is, why can't you buy similar properties that you are renting with the money you make.If you get $200,000 annually(split proceeds with the other owner), you should be able to buy almost any type of property.

Quote from @Jaron Walling: @Kane Spangler There's a since of pressure to build or buy RE in your post.

There is no way sellers are selling at caps that high unless there is a special circumstance, so buyers just aren't buying. 

Investment Info:Single-family residence buy & hold investment in Valdosta.

Buying a large new build home can also work well as a house hack as you can charge a premium rent, and generally most bedrooms built now a days have en suites (at least in my market).  

Quote from @Luis Herna: Let say I am a licensed real estate agent in oklahoma and there is one buyer in new York wanting to buy a property in Texas.

Most are selling hype to get you to buy their programs by deliberately make it sound easy.Your profile here on BP is blank, so guessing you are a "newbie"?