The overall result has been to make entrance to professional
4个回答

Have you ever heard of following expression while learning infinitives:

"James bond is to approach the selected target in Viena."

"The school board is to discuss this issue during next session."

...

--------------

Now you can see the structure;

sb is to do sth

sth is to happen

etc

-------------------------------

which is meant to express sth formal and sometimes imperitive.

---------------------------------------------------------------

You sentence can well be converted to:

The result is to make entrance harder to amatures.

----------------------------------------------------

And because it describes sth happened and sth still having current effect, the Present Perfect Tense is used.

-------------------------------

period