It would be the first time that Sony, Microsoft and Nintendo are all releasing consoles in different years. Microsoft should release their next console before Sony.
Gen 6: PS2 (2000), Xbox (2001), GameCube (2001)
Gen 7: PS3 (2006), Xbox 360 (2005), Wii (2006)
Gen 8: PS4 (2013), Xbox One (2013), Wii U (2012)
Gen 9: PS5 (2020), Xbox Series (2020), Switch (2017)
My prediction:
Gen 10: PS6 (2027), Xbox (2026), Nintendo (2025)
The release of PS5 Pro in 2024 should it make impossible for Sony to launch their next console before 2027 (I guess their plan is even 2028). Xbox Series doesn't look like that it has the momentum to sell a good amount of units until 2027 (and the new models launching this year shouldn't have such a huge effect like "Kinect"), so 2026 should be more realistic. Nintendo's next console is almost safe to be released next year.
Even if PS6 will be launched in 2028, Microsoft's next console should launch at least a year ahead. So even in this case all 3 consoles will be released in different years. Sony should release the PS6 after Microsoft and Nintendo, so they should have the advantage to react to the competitors. Thoughts?
Essay Pro