Earlier quoted context omitted.
Considering how unexciting new CPUs are nowadays I'd wager that a 10 year old computer in 2025 will still be perfectly usable for basic tasks such as email and web browsing. Something like an 8 year old i7 2700k is still very usable for a lot of home users. It might not be a beast when it comes to crunching numbers, but a big portion of the population would be happy using such a chip if you pair it with at least 8GB…
To strengthen rather than diminish your argument, the I7 2700K is over 9.5 years old. Source: https://ark.intel.com/content/www/us/en/ark/products/61275/i...
I'd take the argument farther - I suspect the hypothetical 2015 computer referenced would be fine for most users (with non-processor upgrades) until 2030.