My girlfriend poured so much love in her iPhone SE and it seems like... discontinued.
But when I buy a piece of hardware I absolutely expect it to work for at least ten years. When did that become unreasonable?
The base scenario is that it works standalone and it'll keep working for many years. If you choose to involve a server, then you have a responsibility to keep the server up for an extended period. If it's a legacy product then the number of users will continually drop and the cost to keep a couple servers up will be minuscule.
Still rocking that iPhone 3G?
Obviously they have a lifespan and the quality of cheap products can be quite poor, so there are items that broke and got thrown away.
But there's nothing that stopped working because the manf told me I couldn't use it any more.
However, it depends on a Google service — it won't work without a working Internet connection. This idea is fairly new for consumers.