There are obvious holes in your logic. All those players were taken with little question as to their ability to play LT at that point. Jake comes into the draft already being questioned as a LT. I am not saying he won't go to the pro bowl as a RT starter there for the next 15 years and I hope he does, but you don't spent that kind of money on a RT if your QB of the future is not left handed
There is film all over the Internet of him not being able to handle speed rushers so he is not a Godsend at LT. He is a beast for sure and the best RT in the draft and potential to be a LT in the NFL, but until he can show that he can handle elite speed, his NFL qb will have to see it coming and that would put him as a RT.