A few years ago, I did work for a client with seasonal burst - and not just “sorta” seasonal burst, a seasonal-exclusive burst, that...
Every site in the vertical loaded up and aggressively bought and rented paid links to the point that page authority leapt 15+ points for the targeted page over a two month period
Every site in the vertical dropped spend upwards of $10k+ buying links in a very short duration, probably some in the $20-30k range
Every site in the vertical aggressively grabbed every link their competitors bought in the same point of time with no barrier to link acquisition besides cost, creating extreme authority bloat with little value creation
Every site in the vertical churned a significant portion of their links b/c of renting, creating a net minimal authority gain across the sites despite significant spend
While they were the only client I’ve worked with in this specific situation, I’m sure there are many others who face similar environments – environments where extreme authority bloat occurs because of a type of SEO – the “competitive analysis” expert.