Why might institutions of authority tend to reject new ideas developed by scientists and other thinkers

Every institution has its own interests and ideas, in some cases some institutions of authority tend to reject new ideas or thinkers because they might shake their structure and system or threat their power.

In medieval period we saw things as the Catholic church rejecting ideas that would go against biblical sayings that would questions God views.

The same happens with government or other institutions.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration

this isn't a question and if you're going to list things be kind and use commas.