There had been a lot of articles that perused that similar graph/picture that comes with your OP, so it's hard to pinpoint a single article as a reference. Anyway, your assumption is pretty much supported by historic charts, just look it up over the internet and you'll see that the cycle ends up higher than the previous cycle it was in. This time, however will be harder to know whether the next ATH will be higher than the 2017 one, knowing that it will take a lot more firepower to get this rocket surpassing $20k and higher.