Also my point; "native allies" fell by the wayside when
Also my point; "native allies" fell by the wayside when Western emigrants wanted land, as any number of peoples learned in the Americas, the Pacific, and southern Africa.
Demographically, the indigenous peoples were pretty much out of luck from the 1500s onwards, as long as Europeans were free to head west (or south and east, as the case may be).
The only places this didn't really happen were in the tropics, where the natural "defenses" were such as to prevent significant European settlement, and those parts of Africa and Europe where the locals were technologically - roughly - peers of the Europeans.
Where the locals were essentially still in the neolithic, they lost - heavily.
Best,