They are trying to expand their international market. They started having regular season games there in 2007. It was one a year until 2013, when they had two. They had three in 2014 and have had at least that many every year since except 2020 (0) and 2021 (2).
They have also had games in Mexico City (2016,2017, 2019, and 2022), Germany (2022-2024), and Brazil (2024)
They usually sell or come close to it. NFL revenues are so TV-heavy that close is probably good enough. Adding another TV slot for the games in Europe probably more than makes up for any loss.
There was an NFL development league in Europe for a while..’bout 25 years ago. It was part of an endeavour to form an International World football league I think they were trying to drum up interest in EUROPE. It did not materialize...so it was disbanded for Europe at least.
Teams were like the Rhein Fire, Berlin Thunder, Frankfort Galaxy, Scottish Claymores. Amsterdam Admirals. Barcelona Dragons, London Monarchs...
Amazing how much football occupies the minds and lives of American males. Couldn’t displace futbol(soccer) in Europe.