In the US, GE makes your microwave, aircraft engines, and also the gas turbine your power plant uses.
Siemens makes appliances, MRI machines, and even nuclear reactors I believe.
Or in Korea: Samsung, Hyundai, LG. Samsung makes chips, TVs, washing machines.
Japan: Mistubishi makes washing machines and excavators and mining equipment.
India: Reliance has cell phone service, grocery stores, and oil rigs. Tata makes cars, has tier 1 datacenters, and runs hotels too.
This is hardly a novel idea.
The only recent exception is Samsung because of memory suddenly costing 10x.
Until they sold all their compute to anthropic, Ai was the boat anchor.
No way in hell is Twitter making a lick of profit.
For a while, didn't Amazon do the same? They basically ran a loss with Amazon retail but profits on AWS, until they spun off?
So yes, this is fairly common with conglomerates, (Amazon sold diapers at a loss to put diapers.com out of business). And in fact, this tactic is a target for anti-trust laws where they exist.