"We find, somewhat surprisingly, that vertical integration is more likely to be pro-competitive if the industry is more concentrated," Simon Loertscher senior lecturer at University of Melbourne said in a recent working paper.

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"This effect could even be achieved in some cases where integration bordered on a monopoly," InvestorDaily quoted Loertscher as saying.
"In the extreme, even monopolizing the downstream market can enhance consumer welfare because the integrated firm expands its quantity by a very large extent after integrating," he said.

According to study, regulators should actually be particularly more wary of vertical mergers when there are more firms in a particular industry, rather than fewer.

However, Loertscher’s research was not based on the wealth management industry and hence may or may nor to apply to the industry.