I don't doubt that similar schemes will be used in Africa or India.
BTW Median income in India is about $3K a year.
Lack of sufficient population density and political instability is what would stop this.
I explicitly mentioned income per person. This is household income, which obviously will be higher than individual income.
And as far as connection pooling goes, India already has 88% 4G and 80% 5G coverage in the villages. Far cheaper connections are already available that are already being leveraged in a way that you describe. The market where Starlink is appealing is much smaller.
People vastly underestimate the subjective importance of the Internet for people. 10-20% of the total income seems like a very realistic figure, even if it means spending some days hungry.
People vastly overestimate the purchasing power in places like India. Most of the purchasing power is concentrated in the top 1% of the population and most of that 1% lives in urban areas with fiber connectivity. The bottom 90% don’t even make $1K/person/year. Even a $10/month subscription (1/5th of what it costs right now) would be 10% of the total income, which at those income levels, would never be a priority.