OEMs only recently started offering 5+ years of security fixes. Two years was common until just 6 years ago. Apple got a lot of crap for not supporting older models but the truth is they supported longer than anyone else and only cut support when the hardware literally couldn't take it. Yet everyone ignored that most android makers might not even release a single update much less more than the two years worth needed to cover a phone for a two year contract.

I don't like saying that because I can't stand apple devices. But it's what happened. Then the EU started getting involved. They hated all this ewaste caused by people constantly upgrading. IT security people were speaking up too because phones were a complete risk with people using them for work but not getting updates that stopped them from being owned. It was getting bad for OEMs from multiple angles and they needed to act before the US government made them. And all those factors are the only reasons we are just now seeing all phones come with 5+ year plans.

As right to repair laws get integrated into new releases we will actually be able to take advantage of these 5+ year plans because we will be able to replace the batteries that are normally useless after three years.

I wish most phones had a battery saver option that would stop charge at 80% unless you manually overrode it each and every time you wanted to go over. This would dramatically cut down on the need to replace batteries.

But here is the rub. Even if you convince the majority logically that their phone is still good at year three they are going to upgrade at year two when the phone is paid off. The people that use phones as an identity and brand marker are still going to upgrade as fast as new devices come out.

And devices are going to continue to come out yearly. If you don't ship a new flagship product each year then shareholders will revolt. There must always be something new for the customer. Technology moves fast. If you are an OEM not releasing then you are an OEM that isn't keeping up.

All these forces of market, psychology, legal and repairability and more fight each other to create a situation where most people will upgrade in two years or less. Only a small portion of people will ever try to get 5+ years out of a device. Even the population trying to get 3 years will be two standard deviations out of the majority. Even if the battery is replaceable and the security patches keep coming.