Countries in the global economy may rely on obsolete technologies for long periods of time because of all the following reasons EXCEPT:

Group of answer choices

1- Usage of these technologies is characterized by diminishing returns

2-Adoption of new technologies is restricted by protectionism or other barriers

3-The technologies in question are characterized by complementarities

4-There is a "network benefit" to multiple entities/businesses utilizing this technology at the same time

5-There are powerful political interest groups that derive benefit from the continued use of these technologies