Current share price is only the price the last trade was made at. It would be remarkable if the other 90% could sell for anywhere near that number. Comparing an offer for the entire company to selling 10% to the public is a bit lopsided.
Just look at what happened to Elon.
maybe we should stop here then
If you happen to hold the majority of shares and then try to sell them suddenly you’ll sell them at a discount. Just look at TSLA when Elon had to liquidate significantly to pay for TWTR.
The whole premise of this comment thread is that ARM made more by selling 10% of its stock on a public market than they would have by selling 100% of it to Nvidia. In other words: there already was a buyer who wanted to take ARM private. So how does it seem unreasonable to assume one would exist, when we already know that one did?