Which kind of begs the question about the differences between a "walled garden" in a way to protect their users and what exactly amounts to anti-competitive bus

Which kind of begs the question about the differences between a "walled garden" in a way to protect their users and what exactly amounts to anti-competitive business practices. Windows phones tried the Apple approach if I remember correctly when their phones were on the market and it wasn't enough to keep them competitive. They had a litany of other issues to boot, but taking the "walled garden" approach raised the ire of many developers.