Sure, buy votes to advertise your content. Just make sure you are declining rewards so that you don’t take from the reward pool.
And it’s not like you are advertising a product or service. You’re not a business. So your argument falls pretty flat from that perspective.
Why is it that by advertising I forfeit the right to be rewarded for the work done in researching and writing ? By virtue of what logic ? Where else, in what other situation advertising something cancels all right to be compensated for creating that thing?
Also, indeed, I am not a business indeed. But I happen to think that it would be GOOD for steem if real established businesses were to come to steem and start creating content and advertising ... Perhaps you should read the parable of the finger and the moon ...
https://www.satrakshita.com/the_finger_and_the_moon.htm
Because you are taking from others in the process.
As already mentioned, by buying votes you take from the reward pool. Thereby taking what others should have earned through curation and “proof of brain”. Purchasing votes bypasses proof of brain and directs rewards to your content instead.
Whether or not advertisers come to this platform is irrelevant in this discussion.