I can easily imagine a turbine being a good chunk of the installation BOM cost and budget constraints saying price recoup in x years that extra parts doesn't balance against. And in this scenario, then no, another turbine facing the other direction would not be an option - though it is only efficient one way.
You were clearly looking for an answer from somebody who knew something about the field, but I decided (for some reason) to come in with, like, over simplified first principles speculation. I hate it when people do what I did, haha. Sorry!
I can easily imagine a turbine being a good chunk of the installation BOM cost and budget constraints saying price recoup in x years that extra parts doesn't balance against. And in this scenario, then no, another turbine facing the other direction would not be an option - though it is only efficient one way.