Not sure about "likely much cheaper". Those methods are either funded by VC money (for the case of early startups) or in the case of bigger companies, their oth

Not sure about "likely much cheaper". Those methods are either funded by VC money (for the case of early startups) or in the case of bigger companies, their other products that monetize you in other ways. BTC is expensive to transfer, but other options like LTC are not. It takes a small fraction of a penny (in USD value).