I can't speak for everyone, but the number of PC games I buy at launch is directly related to the prices I can get on third party sellers. (GMG, Fanatical, Voidu, etc). I only buy older games on Steam when they have dropped in price low enough by comparison.
How does removing the ability to shop around for the best price for the platform which has the most beneficial features to me not hurt me as a consumer?
I have no doubt that this is inconvenient for consumers. However, I don't think the market as a whole has been effected. Ultimately, Epic isn't going to be able to purchase exclusivity rights for every other game. That wouldn't likely be profitable. This is a method for securing initial interest. This is all a move to help their platform be competitive. If they can secure a foothold then pricing will improve for the average consumer, as there will be another big player directly challenging Steam and they will be vying for the consumer's attention.
So, yeah, it may not be ideal that for one game, at this moment; your options have indeed been limited. You could say that this exclusivity deal is bad for the consumer in the immediate, but ultimately it seems like it will probably be a good thing for the market as a whole. That is what I meant when I said that it seems healthy.