if value of potential rewards for people depends (even partially) on post payout, and
if your profit also depends on post payout,
This has been explained to you several times without any acknowledgement that you comprehend it.
I have no requirement for people to vote on my posts in order to enter the contest. This alone makes it explicitly not vote-buying. If you do not have to vote in order to participate, then no votes are being "sold." You seem to continually struggle with this concept.
The overwhelming majority of the rewards for my contests come from highly influential stakeholders who do not participate in the contests. This means that the votes cast by these users are not at all related to any promise of receiving any rewards other than what can be earned through curation. In other words - there are no votes being "sold."
My "profit" depends on post payouts just like any other user on the platform, so your argument about "if your profit also depends on post payout" is pointless. Every other user on the platform, if they want to earn money from posting, requires those earnings through upvotes on their posts. In addition, very few users are giving away 50% of their post rewards. So, what exactly is your point?
When you write, "if value of potential rewards for people depends (even partially) on post payout," you're describing exactly how curation works. The higher the post rewards, the higher potential return through curation rewards. So, do you oppose the entire concept of curation rewards?
Every user is a shareholder, and all shareholders are paying for that.
You pay nothing. If the rewards were not going to a sports post, they would be going elsewhere. There is no additional STEEM being created simply because one post earns more than another. Furthermore, the dilution from rewards allocation affects everyone equally, so no individual is gaining or losing more stake than another simply because votes are allocated to certain posts.
which could be greater asset to whole community
This is a matter of subjective value/preference. Unless you have been able to quantify the value of each individual user, then this is just another meaningless argument.
you looses daily because of inflation
As stated, the inflation affects everyone equally as a percentage of stake.
So, as I was saying...you still do not understand how the platform works and you absolutely do not comprehend how my contests work. You may continue acting like a troll if you wish, but don't be surprised if users begin to treat you like one. And perhaps you can actually read my posts before flagging them? If you did, you'd learn that the things you're complaining about are not actually occurring.