I think the dynamics of account aggregation lend themselves to a duopoly, not a monopoly. Account aggregation is an incredibly difficult problem for any startup

I think the dynamics of account aggregation lend themselves to a duopoly, not a monopoly. Account aggregation is an incredibly difficult problem for any startup trying to do something with financial data. It's super hard to a) convince people to sync their accounts, b) get their data correctly, c) at unit economics low enough to enable a business, all while ensuring strong security. Any significant improvement in any one of those areas, and you have a compelling case to switch account aggregation provider contracts. Essentially, the problem is so hard that the quality of the solution really matters. While there are barriers to entry to supplying an account aggregation service (imagine building 15,000 web scrapers), there's a lot of demand for product improvement, which only happens when there's market competition.