Because if you default, or go bankrupt, they lose out the interest payments and the debt owed back. Its all about risk management.
Honestly, the responses in this thread from bitcoin people...it’s like they’re just now realizing that banks have intelligent employees working for them.
Here's a random credit card from American Express. Cash advances have a drastically higher interest rate, PLUS a 3% (minimum $5) transaction fee.
https://www.americanexpress.com/us/credit-cards/card-applica...
Same pattern for Chase Sapphire Preferred. Higher APR and this time a 5% (minimum $10) transaction fee.
https://applynow.chase.com/FlexAppWeb/pricing.do?card=FS6K&p...