The value droped hard since december.
https://www.coingecko.com/de/kurs_chart/steem-dollars/usd
But even if it wouldn't have: Just because some people buy SBD that doesn't mean that a content creator here on steemit gains additional SBD. He only would get additional SBD if someone who bought SBD would transfer it to his steemit, convert it to steempower and upvote the content creator (effectively tipping him with his own money).
But this kind of generosity isn't seen often in the internet.
Lol sir, the value has dropped since December just like all other CryptoCurrencies... The market was/is in a market correction. Come back a year from now and SBD will be an incredibly higher value.
You do know Voting Power recharges right? So it's almost like you have infinite $0.03. Now let's say hundred people with VP worth 0.03 vote you. Boom $3.
If one is still not ready to vote others after knowing the fact that they're not losing anything permanently by doing so, then I'd say it's a problem of their selfishness and sadistic nature, rather than this website.