My guess, the bottleneck is in the data layer. Honestly it's unfair to compare a small e-commerce site made with Next to one of the biggest websites on the int

My guess, the bottleneck is in the data layer. Honestly it's unfair to compare a small e-commerce site made with Next to one of the biggest websites on the internet. If Ebay was made with Next it would probably be much slower. React is the slowest at SSR of the modern frameworks. Amazon considered using it but it was too slow for them so they keep using Java + sprinkled JS.