Which is why I feel like after 20 years in the industry a good portion of people start consultancies realizing there's good money to be made on this hype cycle churn.
$_max = 1 - (H_c / H_h)
That is, the amount of money you can extract via consulting is proportional to the ratio of "hot" to "cold", representing the minimum and maximum hype for a given technology during the cycle.