said by dcurrey :

Not practical. If you have 10 companies offering service you will need 10 sets of lines on poles.

said by halfband :

But in this case there are many areas with "zero" fiber lines on the poll. This way these small companies are the first one there. They are the ones that can choose to lease out the lines or deny access to competitors. I am not talking about overbuilding areas that already have fiber.