I remember at some point tabbed browsing was introduced in IE 7 or 8, and at the same time all competing browsers like Mozilla Firefox and Google Chrome had supported the feature. I have thought that it became so widespread because it was just "user friendly," but now I wonder what made it so successful that it's considered the most "basic" feature that a web browser should- definitely- have.
I don't understand because as far as I know, it was spreading when the RAM many people had was only 2 or 4 GB. Although multi-threading was common, browsing should have been fairly slow when multiple tabs were open. So it could be a disadvantage if you included tabs in your browser.
Despite of all that, what really killed it? What really made the user so satisfied? What was the background at the time it started spreading, and why is it still relevant today?