eBay still in trouble

Looks like eBay is still seeing extreme fallout from their fee hike decision. [here and here]
Now the SFGate/SF Chronicle story does remind us about eBay Seller whining over the years, but this is still a business whose entire existence depends on keeping their sellers and the sellers’ buyers happy. eBay is an intermediary; and intermediaries can and have been replaced before.
I am not saying that eBay will fall soon. However, imagine if Google decided that it could provide an auction clearing/payment system at a much lower cost? Or Microsoft? Or someone else?
eBay has the benefit of a near monopoly position. This makes the battleship slow to turn around when nimbler competitors appear.