The company can charge whatever they want for this feature. Most people who can afford to use a good camera as their webcam will never use it, because they know the quality is worse and they'd rather use industry-standard HDMI.
If I asked Sony for a power generator to charge my camera's battery, they could charge me a million a month if they'd like. Hopefully that would signal to me that there are better and more standard options.
If I asked Sony for a power generator to charge my camera's battery, they could charge me a million a month if they'd like. Hopefully that would signal to me that there are better and more standard options.