Where the competition is less slanted, yes you see countries selecting Leopard for their MBT over Abrams (the US won't sell the advanced Abrams armor packages). But when it's F-35 vs. literally anything else, the competition is for second place. You only really choose something else when F-35 isn't an option at all. Threats aren't needed when you just have to do a fly-off.
Sure, technical capabilities are crucial, but don't political and economic factors significantly influence the adoption of the F-35? Factors like strengthening alliances, diplomatic influence, cost sharing, job creation, and export strategies.
My point is: you don't just buy a plane. You buy into an ecosystem where supply chains, political partnership, trade deals and long-term support are just as important. Take away some of that, and I'm sure for a lot of buyers the Typhoon or Gripen suddenly start looking a lot more attractive.
Obviously many countries have bought the F-35 because of some pressure from the US or as a way to buy protection. Nobody would do that again today.