An example that comes to mind is Tesla’s acquisition of SolarCity. Another is Amazon’s acquisition of Twitch or Google’s acquisition of YouTube (it seems prohibitive to run video streaming services sustainably/profitably without the infrastructure efficiencies of Amazon/Google).
> consolidation > cost reduction > synergies > passed back to the consumer => second order
fucking up your competitors => first order
That's generally why you have to guess at the long term effect of any merger. "Will the consumer benefit only in the short term and the diminution of competition will end up hurting them in the long term?" is the question regulators should answer.
However they probably cannot sell all the shares at an IPO and get the full 40B in cash which maybe is what SoftBank wants at present.
People know that ARM is used in all smartphones and after Apples M1 and the growing usage in Servers many believe that ARM is the future.
Also - with an IPO, customers of ARM like Apple could easily buy shares of ARM...
Probably the reason why Apple didn't bought ARM is because they know they wouldn't get through the competition authorities.
But with an IPO, Apple and other customers could buy something like 9 percent of ARM...