If so, I'm not sure I buy what you seem to be arguing, that "NSO case in India" and "It can be used to plant evidence" makes it anywhere near as bad as what the NSA has done/does. In my opinion this is exactly how a "poor-man's NSA" would look: What your money can buy from greedy corporations protected by nasty governments.
>legitimate opposition
Who decides what is legitimate though? It sounds like weasel words to me, just like "terrorists" (that get defined by those in power and then maybe later becomes revolutionists and heroes if they actually win). Going after Snowden, torture in Guantanamo, and using three letter agencies for industrial espionage is also "legitimate".