I work(ed) on testing storage products. So, here's a probably more precise answer to your question: nobody knows.
There are at least these two reasons: proper testing of endurance of a device is not possible, you can only test that in a pretend kind of way. We are talking about years of service that have to be somehow emulated in at least weeks... and, of course, you cannot really account for physical behavior of materials from which the disk is made by simply running multiple I/O workloads. Now, add to this that the larger the storage capacity, the harder it is to check durability because throughput becomes the bottleneck. I.e. if you emulate device wear by running more I/O workloads, then, proportionately to the size of the device, you will be able to run fewer of them per unit of storage, because you are bounded by the throughput.
Any real (good) tests so far rely on previous generation of devices, and don't necessarily reflect the current situation. I.e. if your SSDs survived for only five years, who's to say that the next generation you will buy will last more or less? They are very likely not the same kind at all...
Also, it's really silly to measure disk durability in units of time... I mean, most tests that intend to measure durability model it by running I/O workloads, so, they'd typically measure durability in something like "how many times can a unit of storage be written over". The usage patterns vary dramatically across different kinds of workloads. So, if, eg, you are running a build server, you will wear your storage a lot faster than if you are running a (well-configured) database server, and still much faster than if you were running a video streaming service, and still much faster if that's a (well-configured) Web server... and the difference could be an order of magnitude between these.
There are at least these two reasons: proper testing of endurance of a device is not possible, you can only test that in a pretend kind of way. We are talking about years of service that have to be somehow emulated in at least weeks... and, of course, you cannot really account for physical behavior of materials from which the disk is made by simply running multiple I/O workloads. Now, add to this that the larger the storage capacity, the harder it is to check durability because throughput becomes the bottleneck. I.e. if you emulate device wear by running more I/O workloads, then, proportionately to the size of the device, you will be able to run fewer of them per unit of storage, because you are bounded by the throughput.
Any real (good) tests so far rely on previous generation of devices, and don't necessarily reflect the current situation. I.e. if your SSDs survived for only five years, who's to say that the next generation you will buy will last more or less? They are very likely not the same kind at all...
Also, it's really silly to measure disk durability in units of time... I mean, most tests that intend to measure durability model it by running I/O workloads, so, they'd typically measure durability in something like "how many times can a unit of storage be written over". The usage patterns vary dramatically across different kinds of workloads. So, if, eg, you are running a build server, you will wear your storage a lot faster than if you are running a (well-configured) database server, and still much faster than if you were running a video streaming service, and still much faster if that's a (well-configured) Web server... and the difference could be an order of magnitude between these.