The default expectation here means "doing the right thing while no one is looking". Ambanis is far far away from it.

I am sorry. Ambanis are not everyone's favourite. Definitely not even comparable to the Tatas. I can see why the hustle culture folks and fast money folks like ambanis. But that is not Shri Ratan Tata or Tatas at all.

I will quote Shri Ratan Tata himself: "They are business men(Referring to Ambanis). We are industrialists."

That quote properly differentiates the differences between them IMO. Not just the perception about them. But also how they think.

In Indian society terms, I meant there is a behavior a society will approve of and expect from successful people. If they do not follow this norm (so to speak), they will be criticized for whatever they are doing.

Ambani's wedding was a huge talking point in India, and most people did not like the display of spending power. It's not legally wrong obviously, but it's not an accepted social behavior. We expect the uber successful people to do the right thing by other people all the time, work towards uplifting the society, and be cognizant of other peoples' lives and challenges, not show off when you know other people are suffering, and be empathetic. A tall order, but this is pretty much how Ratan Tata would be described. He is not alone, there is Choksi family (Asian Paints) who are also similarly humble and upstanding, and quite a few others who built business from British times to the socialist times and then the liberal era.

Opulence in societally sanctioned rituals is not considered “bad” in India. In fact it would be “bad” if they didn’t throw an opulent wedding commensurate with their wealth.