Hilariously, Chrome is now โupdatingโ its design to look like Firefox before Firefox decided to become a complete Chrome clone.
This commenter, however, said it best.
A Mozilla representative responded, โCANโT TALK BUSY UNDOING EVERYTHING!โ
Firefox began its long, inevitable slide when Mozilla decided it must be more like Chrome than its own browser with its own capabilities and advantages. Very apropos to see Chrome mime Firefox of 5+ years ago as Firefox recedes in importance and influence.