I don't think the Elites expected to lose the Brexit vote. They will be more careful in future.
There is a huge gap in belief systems between the bulk of people in the suburbs of Europe, the USA, Canada, and Australia and those who have a loud voice in running the system. Islamic migration is a stark example.
The Brexit vote showed the people who their real foe is. The old trick of distracting people with last centuries blue/red fault line is being exposed. Jeremy Corbyn and Goldman Sachs were defeated by the real people, I doubt they would enable us again.
The voices of the elites won't want referendums on homosexual marriage or anything else.