Hindustan actually has good agricultural potential; with veggi diet, warm climate..most of them wouldn't starve at least to the s asian dietary standard. Hindustan definitely has wage advantage in very low skill 'manufacture'

>>Their numbers are too small to hire everyone as domestic servants<<

What do u mean? HKers can't hire all the pino females as domestics and oil arabs also hire a large number of pino maids

Actual number of domestics in india is in 10s of million. about a yr ago, a poster at UNZ said it only costed US$80/mon to hire a servant there.

https://www.business-standard.com/article/current-affairs/why-is-the-condition-of-domestic-workers-seldom-discussed-in-india-118060800193_1.html