My question is: Why do libraries want to be gateways?
A gateway implies that there is a fence, and that the gate is the only way to get through the fence to the other side.
Folks—there is no fence!
There are now so many entry points (gateways) to scholarly resources, including Google, Google Books, Google Scholar, thousands of proprietary databases, etc., that there is essentially no fence.
Why do we care if scholars use libraries as a gateway, when there are so many other ways to get to the same content? Who cares if scholars find books on Amazon first, then come to the library?
I fear we are putting lots of resources into developing and promoting fancy gates, when there is no fence.
See also: No one wants to use a library catalog