Hold up before you place the order!
I need train carriages, a supercomputer, radiotherapy equipment, nuclear power plant, aircon, self propelled artillery and an escalator. Don't ask me why.
Me: I need a flute for my orchestra performance
Yamaha: No problem, here's our 800W Series.
Me: You wouldn't happen to know where I can
get a heavy 600 cc sport bike with the stop speed of 260km would
you?
Yamaha: You're not gonna believe this
This reminds me of around 2000, when I had a Daewoo television, and then my mind was blown one day when I saw a Daewoo car. Who makes televisions and cars? Daewoo apparently.
You can do similar with mitsubishi, yamaha, bugatti, samsung (especially samsung. They make a ton of things. Ships, phones, hospital equipment, clothing and you can even live at their hotel
These weird combinations look fun but they're generally the result of having conglomerates, companies that have gobbled up a bunch of smaller, unrelated companies.
Conglomerates are tricky to pull off because managing a lot of disparate business lines. A CEO who knows all about how to market construction equipment is likely to miss that one of their other products became an iconic sex toy years ago. The big problem is that more focused companies can typically outmaneuver you in their area of focus.
Theoretically, there might be synergies that make your company more effective but normally, conglomeration is drag on the risk-adjusted rate of return on your company. It's much easier to pull off when your government has strong protectionist policies or if there are officials you can bribe to keep out the competition.
Why would a company do something that's generally bad for the company? It's generally good for the CEO. A CEO often has a very concentrated investment portfolio. Changes in the value of the company they're running can have a huge impact on their personal wealth. Conglomeration allows a single company to be a diversified asset. It does it in a way that's objectively worse for shareholders but better for the CEO.