I know my dealership told me that to view the manuals they have to login to the LS site so they monitor or can monitor what dealers do. If that's true, maybe that's why you are seeing this being stopped. Don't know.
John Deere, Massey Ferguson, CNH, Kubota, Yanmar, and probably others I'm forgetting but they all offer service manuals for sale. Why LS doesn't is a big question. If you think about it they are loosing money by not offering one and dealership's are too by giving it away.
I told LS North America last year that they needed to start offering service manuals for sale and a parts website like the bigger manufacturer's do. To date I've not heard anything from them and that was expected.