“Always gone through booms and busts” as in they started in the late 70s, grew really fast, stalled out in the 90s, and then have been on one unprecedented 15-y

“Always gone through booms and busts” as in they started in the late 70s, grew really fast, stalled out in the 90s, and then have been on one unprecedented 15-year “boom” since about 2000 which made them the most profitable company in the world? Otherwise, I don’t quite get which cycles you are referring to.