I upvoted this comment but I will also answer in the contrary. Presumably the weight of your vote would still be based on your SP so there is an incentive to buy or own SP in terms of being able to improve the visibility of content. But the only people with a real incentive to do this are effectively advertisers, so it becomes a bid-for-placement platform, something which is already a part of the value of SP, but which coexists with the potential for return-in-investment via curation rewards.

I expect this to be destructive to the value of Steem both in terms of the capitalization and also the usability and appeal to readers