If you notice the whole "buying experience" has shifted radically towards the sellers. We the buyers are unimportant. We leave there's thousands of others taking our place.
I suspect that many eBay sellers would take issue with your statement, and some sellers feel that eBay caters excessively to buyers and that eBay does not care if sellers stay or go.
Although I am a buyer and not a seller, I think there are many aspects of eBay that are slanted heavily in favor of the buyer. eBay will automatically side with a buyer on any "not as described" return case, for instance -- though that may in part be driven by the ever-present threat of a credit card charge-back if eBay tries to offer less protection to buyers than credit card issuers do.
eBay needs both buyers and sellers.
Generally it is easier and more cost-effective for a business to keep existing customers (which includes both buyers and sellers in eBay's case), than it is to replace them with entirely new customers. Alienating your existing customers is bad business.
Businesses that need a constant influx of new customers to replace disaffected customers that leave unhappily tend not to stay in business very long.
