My take is SEBI knows everything, they have access to all market/investors data.
They also know 90-95% are small traders trading with F&O. They just want to shift the F&O volume to CASH market as much as possible to collect some extra STT for Govt.
SEBI would not be benefited by that move, as their charges are same only Rs 15/Cr for all segments, Intraday cash or delivery or F&O all same. It's the only Govt who would get extra STT.
There is clear proof that Gormint is behind the ugly plan to collect some more TAX.
- Same Gormint increased the service tax rate from 12.36% to 14% and then imposed Swachh Bharat Cess of 0.5% and Krishi Kalyan Cess of 0.5%. Finally, Service Tax is 18% with GST!
- Gormint saw traders are shifting to option trading, most recently STT for selling options has been revised from 0.017% to 0.05% on the premium which is 300% of previous one!!
- Then, most infamous 10% LTCG was introduced but STT is not abolished. This is called dual taxation.
Finally, the ugliest plan started to move F&O volumes to CASH market(to collect some extra STT) using SEBI in the name of Investors Protection!!!!