Starbucks has probably improved your coffee-drinking life even if you never step foot inside a Starbucks shop. Because, again, what chains do is set a floor for standards beneath which it is not wise to fall. Starbucks may not be the best coffee in the world but if you’re competing with Seattle’s largest you better offer something better than they can provide.
The reason Starbucks and other chains have made less impact in, say, Italy or the Netherlands is that these countries were amply-stocked with places you could purchase good coffee before Starbucks et al arrived. Britain? Well, not so much.
Those wealthy consumers who deplore Starbucks and want to stick to their single-tree sourced, Ethiopian high-roast or other comparably trendy, exotic and fussy brews are entitled to their prejudices. But they might at least recall that Starbucks created the market in which they can parade their snobberies. They owe something to Seattle too.