Someone sold shovels to the Cali gold miners in 1848

Paypal is still seeing terrific sales growth followed by strong earnings.
PYPL net margin (15.5%) while not the best for the tech sector, is remarkable compared against:

• TGT 4.3%
  
• WMT 3.6%
  
• AMZN 5%
  
• GS 11.6%
  

I think there will be a great deal of growth in the cryptocraze with traffic being driven to Paypal as they worked the headlines for months as being a BTC source. The crypto craze is only starting, but buy or sell BTC those transaction fees will be reaped here - and they will indeed get into retained earnings as PYPL is run well & lean on the books.