The QuickBooks ecosystem is a large driver, but they also offer their payment processing via many other paths. Competition in the space is vast, and a good thing, unfortunately most of the competing products are actual garbage.

Turbo Tax is small peanuts for Intuit, they make most of their money from the Payments division.

That’s not surprising, if you live outside of the US. Otherwise, I do have a follow up query for you 😅