Anecdotally as a person who often evaluates / purchases software for a smallish business, I don't care at all what payment methods you support as long as I can try the functionality without going through the payment flow. Businesses have bookkeepers and bank accounts, we'll mail a paper check or even make a wire transfer if thats what we really have to do to get a service that provides value - it'll be more annoying than a credit card, but by the time we arrive at the point where I'm annoyed, the purchase decision is probably already made based on other merits.
As an individual consumer, I'm much more fickle since I'm usually buying commodities and convenience matters.
As an individual consumer, I'm much more fickle since I'm usually buying commodities and convenience matters.