The typical situation in science is that you're expected to cover "100%" of your time through some combination of grants and teaching. There is no specific allocation for "professional service", but you're expected to do it anyway.
With standards bodies, it's common that some representative of each organization is required to attend meetings to retain voting privileges. So if the organization wants a chance to influence the Standard, they need to send people and pay for it. One reason is prestige/advertising, but a Standard also enables tactical advantages, e.g., (a) include feature X that lets us showcase our hardware or (b) prevent feature Y that would be expensive for us to implement.
With standards bodies, it's common that some representative of each organization is required to attend meetings to retain voting privileges. So if the organization wants a chance to influence the Standard, they need to send people and pay for it. One reason is prestige/advertising, but a Standard also enables tactical advantages, e.g., (a) include feature X that lets us showcase our hardware or (b) prevent feature Y that would be expensive for us to implement.