You cannot buy a macbook pro in all cash in India. It is illegal to use cash above certain limit. There are restrictions on what a business can claim as an expense if they are paying in cash. There are onerous compliance and tax hits which come with accepting cash.
Businesses are reluctant to accept cash when government punishes them with compliance and additional paperwork + tax + tds.
The US is trending this way with inflation. 10k is the numerical limit at which everyone treats you like a criminal in the US, which was roughly equivalent to 60k (in 2022 dollars) when the law went into effect. Now it's not even enough to buy a middle of the road 10 year old used car.
One of my bank accounts has been blocked for the last 6 months over this, despite hours on the phone beforehand and countless assurances that this wouldn't happen. It reminds me of traveling to Canada with a credit card in the mid 00s.
Businesses are reluctant to accept cash when government punishes them with compliance and additional paperwork + tax + tds.