The best possible outcome for ARM
The lawsuit should never have happened, but as it did happen this is the best possible outcome for ARM.
The current management seems to fail to understand what got ARM into its position today. They offer a decent design with high performance and low power consumption, they have excellent toolchains for them, but they don't tie you to a fab because they don't have one. And their licensing is quite literally pennies per chip.
That's why they're the go-to for embedded devices and small form factors. They were cheaper than their competitors AND more flexible.
The overlooked thing is that there was definitely more money on the table to be taken. Early embedded devices were using old Zilog processors, or Motorola 68000 series ones. In the high performance arena there was a plethora of options, but most notably PowerPC became popular in embedded use for a while. ARM swept them all away because their business model depended on their partner fabs choosing bulk sales over higher margins.
But Softbank want a fast return on their investment, so have decided to throw this away.
In the process they've ruined their reputation AND sent a message that they're not necessarily the reliable partner that they once were.
And they've done this at a time when a viable competitor has arrived - RISC-V. I'd bet pennies to pounds that Apple have a coupe of development boards running their operating systems on RISC-V, just in case this lawsuit succeeded.
ARM won't vanish overnight, but unless they - and their owners - understand what made them big, they're going to go into a slow decline.
Their advantage over RISC-V is a slim one, and it's in those toolchains and their higher end designs. Perhaps they'll have to abandon the lower end of the market to RISC-V eventually, but their ecosystem advantage would make low licensing fees profitable for years to come. Sadly, the greed of their current owners means I'm not sure that they'll be able to take such a long term view, and that they'll continue to do damned foolish things like suing one of their largest customers.