In addition to incidents like these, corruption is widespread in India. Exports qualify for GST exemption or refund, but in practice refunds are hard to get (at least without a 5% or more bribe).
Just a twitter search for "GST refund bribe" will show a lot of examples.
A bigger issue which is still applicable today is that long term capital gains tax on startups and other unlisted companies is still 28.5%, while for listed stocks it is 10%. [2]
There are some exemptions announced today for foreign investments until 2024 with a lock-in period of 3 years. [3]
[1] https://yourstory.com/2019/08/angel-tax-startups-angel-inves...
[2] https://www.business-standard.com/article/companies/higher-l...
[3] https://www.livemint.com/budget/news/budget-2020-full-text-o...