My employer requires economy fares, cheapest if possible, but also has a policy that notes that Tango might be too restrictive. If a short flight is only $50 or so more expensive, then they are fine with T+ (might end up having to pay higher change fees etc). In my experience, the T:T+ difference has typically been in this range on flights I have booked.
I dont travel to Asia regularly, so haven't been hit by the impact that many are discussing there. My travel is a mix of NA and occasional TPAC/TATL flights that have got me past 50k status miles for the last few years (I know thats minor to some people here).
If WS to T+ fare comparison in NA is now almost a 100% increase, then its hard to justify T+ . That means I'm not likely to hit 50k miles; which then means I likely wont be able to upgrade outside NA next year; which means that there's no much less incentive to go with AC at any time.
I know that there's many thousands of complaints, comments etc about AC pricing and the lack of apparent sense to it all, but there are days when I look at the prices and have to wonder why I stick with AC....