After almost five years of suing each other in courts in the United States and Europe over patents on mobile devices, Apple and Google abruptly announced Friday night that they’ve called a ceasefire: They’re dropping all of the litigation. They’re not even making a deal to cross-license one another’s IP, just declaring a truce and walking away.

Apple has not yet settled with Samsung, the device manufacturer that most successfully employs Google’s Android operating system, so the two companies haven’t entirely resolved their dispute; evidence from the recently concluded patent infringement trial between Apple and Samsung in San Jose, Calif., revealed that Google is paying at least part of Samsung’s defense costs. (The Korea Times reported Monday that Apple and Samsung are in global settlement talks.) Until there’s a Samsung deal, two law professors, Brian Love of Santa Clara University and Michael Risch of Villanova told Bloomberg, the Google settlement is more important as a symbol than for any actual impact.

What is increasingly obvious is that the same can be said for the entire panoply of smart device patent cases. Apple and Samsung have now been through two long and expensive patent infringement trials before U.S. District Judge Lucy Koh in San Jose. Apple has won both, but the jury in the trial that concluded earlier this month awarded the company only $119.6 million in damages, less than a day’s sales for Samsung. Most importantly, Apple failed to win an injunction in the federal-court litigation. Samsung also tried and failed, in its case at the U.S. International Trade Commission, to win any prohibition on the importation of Apple products. Microsoft, meanwhile, established in separate litigation against Google that individual patents in high-tech devices are worth a pittance.

It has taken five years and untold tens of millions of dollars in legal fees to confirm that competition over high-tech products that make use of hundreds of patents will not — and should not — be decided by the courts. Despite Steve Jobs’ famous description of Android as “a stolen product” that he would destroy through “thermonuclear war,” it simply doesn’t make business sense to throw money into a litigation bonfire that will leave you with nothing more than a handful of cold ashes.

I’ve said this before, but the settlement between Apple and Google makes it manifestly clear: No one won the smartphone patent wars.