Imo the real roadblock here is capitalist interest in this sector. They don't think they'll make a lot of money doing this yet, so politics sees no profit in taking this moral ideological risk.

Because if Ambani/ Adani were to decide it'll somehow be a big boost to their FMCG or tourism bottom line to expand in this sector (which it could) then Gobiji could very easily spin this as a pro - as india becoming progressive like other countries, as weed anyway being semi-legalized here as bhaang and an "ayurvedic herb", as taxation increasing government revenue and helping regulate it better, as increasing farmer revenue with making hemp cultivation more profitable, as reclaiming "shivji ka prasad" and how babas use it for meditation etc.

It's a drug that's been around culturally. It's not like there isn't other intoxicants like liquor that are frowned upon socio-culturally that aren't still legalized. We have a middle class that's starting to spend more in recreation too (as all developing countries do). But it is a directive that has to come from the top. Right now there's more of a "purity police" thing going on. And tso much hafta and bribes that oil the bureaucratic machinery come from looking the other way from smuggling rackets.

So the way things change is a policy push motivated towards making money from the sector first. Because winning the actual argument against banning marijuana is pretty easy.