India has ordered the blocking of 25 streaming services — many with millions of viewers and even paying subscribers — for allegedly promoting “obscene” content, in one of the South Asian nation’s biggest digital crackdowns yet. The order affects lesser-known, but wildly popular services like Ullu and ALTT that cater to the country’s mass-market appetite for adult and edgy entertainment. This week, the Ministry of Information and Broadcasting issued directives to block access to websites and apps...