With video game consoles, you have a single device where micro-optimizations are constantly done, new features are added, and all software can be purpose-built to work really well on that specific hardware. All of that for ~7 years means a really fantastic user experience and a massive community of people that have collectively worked through solutions to common problems and forced the company's hand on defects (joycon drift, for example). It also means tons of high-quality hardware-specific accessories, both from the company that made the console and from third parties.
For about five years it seemed like every flagship spanning generations was the same SoC