Apple introduced the iMac in 1998. According to Steve Jobs, the lowercase "i" stood for "individual" and "inspire", among other things. Unstated but obvious was its connection to the capital "I", as in my self. Anyway, that was the start of "i" being at the head of Apple products.
A few years later, in 2005, YouTube was launched. Here the personal pronoun was undisguised. It's a proverbial tube, like what we call the TV set, but it's all about you.
There was a certain kind of individualist idealism at play here. Phony and patronizing, to be sure. But the technology had to be marketed and sold with the promise that it would empower you, raise all its users to the level of tycoons and princes.
That seems a long time ago now. Tech barons have taken to making Bond villain-like threats about how much their creations are going to destroy and make obsolete. Underneath, the attitude has always been "I'm more important than you." Now it's "I matter. My Tamagotchi matters. You do not."