Of course it's convenient, the big walled gardens are as successful as they are because they are very convenient as long as you're fairly typical (like the vast

Of course it's convenient, the big walled gardens are as successful as they are because they are very convenient as long as you're fairly typical (like the vast majority of people), you don't get kicked out (seems very unlikely) and they don't stop operating (not a big worry with Kindle). Scrounging books from ten different shops, giving my credit card to each, managing everything myself, no sync with my phone, higher prices, not finding some books because they're only on Kindle, that's inconvenient.