This is because musing.io is not much popular and it needs more marketing just people are coming here and getting upvotes from company it would be better musing will do more upvotes and more marketing of their platform in steemit. Then there are chances of increasing more customers and i can see few people who has better voting power has already done great job here and are upvoting daily on good answers post. So they are working and people here are just for earning no to learn something and not to solve their question. so this is the reason behind they are not getting upvotes.