I'm thinking about this today in response to Etsy rolling out some changes.
I'm not an Etsy seller, so I can't speak to these changes directly. Only indirectly based on the long litany of complaints I sat through yesterday from someone who I've tried to help in the past, but who did not heed my advice.
(In this particular case, they now understand why I gave them that advice, and they are working to implement it so that they can become less dependent on Etsy, but ... I mean, they're already suffering from significantly reduced income and it will be much harder to build a new channel after the old one has collapsed, rather than using the success of the old one to build the new one. )