I feel like that's just a very loud minority among those who play games. As you've so stated, the majority of people who play these games either do not care for politics in video games, and another subset prefer it that way.
If even the greediest of companies in the video game industry keep doing that, that means they've analyzed the market and having politics in video games might have between no to a positive impact on sales.
AFAIK there's a lot of talk about making GNU Taler the basis for the 'digital Euro' which is curently being debated at the EU Parliement.