Stripe Payments: Is it normal to have high customer count but low subscription count?

I recently integrated with Firebase Stripe extension to accept payments on my website - https://TheCoinMonitor.com

It seems to be working as expected, but I am seeing a high number of customer count in Stripe with a very small number of customers actually converting and paying.

In the firebase extension configuration, I have explicitly set the option to not sync all authenticated users to Stripe and create a stripe customer on the fly - which means that in stripe a customer is only created when they go to the payment page.

If my understanding of how the stripe payment extension works is correct, then it looks like a lot of customers click the "pay button", gets redirected to the stripe payment page but then do not actually pay.

I wanted to check if it's normal or do should I investigate further?