Sociologist: Some economists hold that unregulated markets should accompany democratic sovereignty because they let people vote with their money.
Counterpoint
If you're aiming for democracy, you should have free markets, because that way people can vote with their money.
Conclusion
People who want democracy can still want regulated (un-free) markets.
Evidence
Voting with money is a question of "What do I want", whereas voting in an election is a question of "What do we want". The private consumer and the public citizen are different entities (so supporting regulation and supporting democracy are not contradictory positions)
Goal
This is an unusual feeling ... we're doing Main Conclusion, and the conclusion is the last claim? With a clear conclusion indicator like Hence?
Since this argument is still a rebuttal argument, we might want to prime our brain with the sound of negating the opponent's position.
Opposing position Unregulated markets should accompany democratic sovereignty.
Author's rebuttal position Regulated markets can accompany democratic sovereignty.
Ultimately, that rebuttal position does sound like the final claim, so let's look for a meaning match for the final sentence.