Q421 transaction volume for BTC is projected to be the highest ever, but it would still be 260% lower than Mastercard's and 560% lower than Visa's. Reports are estimating that the BTC network could grow to support 800 million users by 2030.
https://www.notebookcheck.net/Bitcoin-s-transaction-volume-outpaced-Paypal-s-by-62-in-the-first-three-quarters-of-2021-still-way-behind-Mastercard-and-Visa.582227.0.html