"Tibet", was merely an administration issue being part of the duties of fellow Tibetans.  If Mao Ze-dong had stayed alive for another ten years, basing on his "overt plot" political trickery, he probably would have notified the American and the British:

          "I am leaving from Tibet",

          "I am "too tired" in administering Tibet, you "help" me do it!"

          It was absolutely possible for Mao to withdraw the army, call back the Dalai Lama, toss Tibet to him and allow him autonomy.

          "Give it a try"!

          A highly difficult case is that, the farm slaves of the forties and the fifties, who are now the "masters", might not be willing to tread the retrogressing path.

          Finding living means in such a snowy territory is extremely difficult, and feeding the few millions of Tibetans is no easy task.

          It is a fact that the Han people each year subsidize billions of dollars to build and support Tibet.

          After the Dalai Lama fled to India in the fifties, if Mao Ze-dong in the sixties and seventies or Deng Xiao-ping in the eighties were really to "respectfully return" Tibet to its rightful owner, the Dalai Lama and his Ge-xia regime would also find it quite difficult to well-keep Tibet.

          After the fifties, on the return of the Dalai Lama, what would those with "vested interest" and who were administering Tibet think? What would they then "do"?