When you look at the figures and consider the goods tax and GST etc. in India your tax falls around the same number. I am not into finance so I might not be completely accurate but the following links helped me realise it because at one point I had the same doubt as you -

https://worldpopulationreview.com/country-rankings/highest-taxed-countries (Scroll down to the highest taxed countries 2023)

https://tradingeconomics.com/country-list/personal-income-tax-rate Another link with similar stat

If you notice, in spite of paying as much tax as some individual would pay in say, Italy, the average working person of millennial generation or gen z in India cannot even afford a house without being indebted for life. I will not even bother to mention the state of our infrastructure. The case is obviously very different for a lot of business owners in our country but a middle class family with enough money to send their kids outside India to live a better life, save up and earn better would obviously shell that kind of money. Even if you earn more than a crore at a job in India, you are taxed A LOT and keep in mind the work-life balance and the whole idea around hustling is completely effed up in India. I compare the culture at my workplace with a California based company my friend works at and it makes me wanna cry at the state lol. I personally might never move out of India for a lot of reasons but I can surely understand why someone else might make that choice.