Yes TB never stopped being mainstream.
What universe do you live in, and can I get 2000-2012 games from that universe?
When publishers started to pursue consoles certain genres were abandoned. IPs that didn't fit in, like Syndicate or XCOM for that matter, they would be rebooted into shooters. Until XCOM-2012 turn-based games would be PC exclusive and mostly unexistent. What turn based games were there? Civ series, that's the one that survived. Heroes of Might and Magic died off releasing cheaply produced sequels. There are japanese games, but they comes from a bit different market.
