Handset makers could start some sort of ... Open Handset alliance, oh wait..that's how we got Android. Nope. Better alternative would probably be some sort of

Handset makers could start some sort of ... Open Handset alliance, oh wait..that's how we got Android. Nope. Better alternative would probably be some sort of blockchain thing with reviews baked in and maybe authority nodes (devs with experience) could validate/clear apps from having viruses/etc... or just have a reporting mechanism so apps get pulled when suspicious.