While the Pixel 6 ushered in three years of major Android OS version updates and an additional two for security patches, that’s still nowhere near the longevity of the iPhone. Google hopes to change that on the Pixel 8 and 8 Pro with noticeably more OS updates.
Don’t forget, it’s 3+2 years from release date, not from when you purchase. I think that makes a pretty big difference, especially if you’re price comparing current midrange phones versus last year’s flagships.
Apple’s strategy of releasing 7 years of support for phones also allows it to sell last year’s phones as a discounted model. You can go on Apple right now and buy a brand new iPhone 12, released almost 3 years ago, and still count on getting 4 years of updates.