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I disagree. Just check accounts like the one of @tamim or also @sandrino. They make huge rewards by upvoting their own posts again and again. For example @sandrino just overtook me in the SteemWhales list by doing nothing but upvoting his own posts.
As long as not too many users follow these examples, it won't hurt the platform too much, but if more and more members recognize how lucrative it is under the current conditions, it actually could be the end of Steemit.

If the gaming is allowed, unfettered, sooner or later, that will be inevitable result - everybody just gaming for up votes, which will kill it, like you say.
I don't see the ethical stance changing, which is whats is needed, before implementing any changes.
And certainly not from the current big players?- why would they? - its the game they want.