Will Bitcoin overcome Paypal?

Bitcoin certainly has the potential to replace bitcoin and it is a lot better than paypal even. but in my opinion there are two things that are preventing this to happen.

1) Is the volatile price: when price of bitcoin is not stable, people aren't seeing bitcoin as a currency. instead they treat it as an investment and nobody uses investment to buy things.

2) The block size: which is making the transactions pile up in the mempool, making things slow and increase the amount of fees by a great deal.