can you elaborate a little about which unbeatable juggernauts you have in mind?

i think where in the past juggernauts have fallen its usually due to not being wise to megatrends/platform shifts. I'm not saying amzn/fb/googl are immune to these, but they have each in their own way shown a fair amount of nimbleness in the 10+years they have been around, navigating huge shifts in consumer behavior. If they can learn from the past and prevent themselves from ossifying, they will put off their eventual decline for that much longer. I think bezos and zuck have among the best attitudes to change/learning we have ever had in corporate america.