Perhaps, but they don't say it explicitly. For example, Bitpay says (at https://bitpay.com/)
`
Charge $1, get $1
Instant conversion, no transaction fee, and bank deposits in US Dollars, Euros, GBP, CAD and more. We take the bitcoin exchange rate risk, your customers get the best rate on the market, and you get a payment you can count on, every time.
`
