This is not only giving preferential treatment to a select few but reducing the chance for a sale which means that the seller will have to pay to list the item again, and again, and again
You don't understand, it's reducing YOUR chance of a sale while at the same time it's increasing someone else's chance of a sale.
Your task is to find a way for YOUR listings to gain the advantage.
The favorites will flourish while the "unfavored" will fall to the side or seek greener pastures.
But the "favourites" are just the ones with the best buyer satisfaction (service and price) and the knowledge to tweak their listings to attain the best ranking.
The ultimate end point will be if Best Match increases overall sales, if it does it's here to stay, if it doesn't it will fade away. It's far too early to know the answer but I can assure you that the eBay bean counters are trying to determine the answer.

"What else could I do? I had no trade so I became a peddler" - Lazarus Greenberg 1915
- answering Trolls is voluntary, my policy is not to participate.