We don’t know that. I believe it’s possible that they have doubted they could win playoff games in Dallas for years.
Plus if you were frustrated with the circus environment in Big D, going somewhere else like Jacksonville would at least be a different address where winning is more the focus than making money.
The jags made an AFC championship game Lewis’ rookie year in 2017. They have won more playoff games than us since our last SB. They haven’t won as many regular season games but they have won more playoff games.