>>60770706 (OP)
Lots and lots of businesses, not to mention people adding it to their retirement accounts.
Retail mostly does the ETFs now; corporations are buying OTC for their treasuries. You can see the ETF purchases at
https://farside.co.uk/btc/
and if you look at the math, they've been buying around 3X the daily mining output. I've seen articles about the corporate treasury purchases but have no way of verifying the figures myself; those are apparently exceeding the ETF purchases.
So, right now, somewhere over 7X of daily new supply is being slurped up. Note that this doesn't count foreign governments such as Bhutan or El Salvador, who are apparently doing their own mining.
I mean, it was just revealed that Harvard bought $116 million (or somewhere around 1000 BTC, maybe more) for holding for their endowment. So, it looks like everyone is getting in on the gangbang.