Getting serious for a minute, United does underperform financially relative to DL and AA. These incidents do have some effect. Not enough to threaten the airline's viability. But not negligible either.
I'm SFO based and I fly almost monthly to Canada, so UA/AC would be the completely obvious choice for me. But I haven't been on a UA plane in 5 years, even tho it takes me longer to reach my destination with DL. United has lost my business, and I am certainly not alone.
Ok, back to the jokes!