That may well be; these articles hint (without supporting evidence) that fees are part of the motivation, but I'm not sure how much credence to lend them: http:

That may well be; these articles hint (without supporting evidence) that fees are part of the motivation, but I'm not sure how much credence to lend them: http://www.dailymail.co.uk/news/article-2153008/Visa-branded-cynical-bans-rival-cards-Olympics.html http://www.dailymail.co.uk/news/article-2153008/Visa-branded... and http://www.thesun.co.uk/sol/homepage/news/2910799/Visa-in-Olympic-Games-tickets-storm.html http://www.thesun.co.uk/sol/homepage/news/2910799/Visa-in-Ol...