Pepsi and Coke are world class competitors.

But why share the formula when they already taste the same?

Pepsi has a sweeter taste than coke, I doubt Pepsi would have changed their product anyways.

Hmm i can’t taste the difference

Oh well, Pepsi pretty much copied coke but changed a couple of things so Coke can't sue them. If you pay attention you can see that Pepsi is less gassy while coke as a lot more gas in it.