"The next billion users..." What Google counts instead of sheep to fall asleep at night. They'll likely come from India, the world's 2nd most populous country (barely short of China). Roughly half of India's 1.3B people have yet to get online. Google wants in on those ~650M, so it's investing big in the world’s fastest growing internet market:
"I know I'm not the only one"... As geopolitical issues with China heat up, more companies are looking to India. China already bans American tech giants like Google and Facebook for censorship reasons. Now America's security concerns are intensifying (think: TikTok bans, Huawei bans). Political and trade issues, like China's crackdown on Hong Kong and its new deal with Iran, create a tense situation that companies don't feel safe investing in.
India brings less spending power, but more numbers power... Tech companies like Google value users by their revenue potential. India's gross national income per person was $2,130 in 2019, compared to almost $66K for the US. But the US has 330M people, over 90% of whom are internet users — India has 1.3B people and only ~55% are internet users. A massive untapped market makes up for spending power differences.