The Jags wouldn't trade their first straight up for Watson because the possible upside for Lawrence is so high, and the cost of paying Watson versus Lawrence is so lop sided.
And if you are the Texans, do you really want a situation where you get a few mid-round 1st round picks and have no upper level QB any longer?
If I'm Houston, I play this to the wall. Better they anger Watson than their fans by trading him for a bunch of poker chips. And for all the hoopla, Watson is under contract. He either shows up or he doesn't get paid. And that's a LOT of moola to lose to have a hissy fit over.
Ramsey was in a totally different situation as a non-QB.