I second that. Paypal is unrealiable and greedy. I have observed even for currency conversion it will charge more than the bank. If they think your company runs a pyramid or ponzi scheme then your account gets frozen for 6 months. They can exit cryptocurrency at any time jeopardizing Storj or any crypto project that is unfortunate enough to implement Paypal. Don’t forget customers can chargeback and subject Storj to abuse which will take more dev time.
Storj only needs a credit card from its customers.
Almost everyone uses a card and a sizeable amount of them uses Credit card.
Excerpt:
More recently, a Forbes Advisor survey from February 2023 shows that just 9% of Americans primarily use cash to pay for purchases. Debit cards and credit cards are the primary payment method used, with 54% of consumers using a physical or virtual debit card and 36% of consumers using a physical or virtual credit card.[4]
Source: https://www.forbes.com/advisor/credit-cards/credit-card-statistics/
I know you would want statistics for Europe so here you go 
In Europe, there are two main credit card providers. Between Visa and Mastercard they make up over 90 percent of the purchase volume market share across Europe. In total, there are over 810 million payment cards across the continent.
Source: Credit card ownership in Europe, by country | Statista