Yes, it is MUCH easier to get internet access than to get a bank account.
> And why should the same surcharge not apply when paying with Bitcoins?
Suppose you buy services from someone in Argentina and you pay USD 100. Paypal/Banks will give the recipient the "official rate" of the USD to Peso (as of today: ARS 8.45/USD)
Now, suppose that you send the equivalent amount of USD, but uses BTC. The receiver will sell the BTC (if so desires) at the rate established at the local market, which is mostly pegged to the Blue ("unofficial") Dollar. Exchange rate: ARS14,50/USD.