Petersen named three competitors to Long Tail Pro, the portfolio's flagship keyword research tool, during the interview: SEMrush, Ahrefs, and Ubersuggest. He did not provide revenue, valuation, or customer figures for any of these rivals, and no metrics about those companies should be taken as confirmed figures. Petersen's mention was limited to identifying them as market participants in the keyword research category.
Petersen also described a broader competitive dynamic in the SaaS market, noting that new SaaS models that gain traction quickly attract low-cost knockoffs from developers in markets with lower development costs, who can charge roughly 10% of the incumbent's price and capture a subset of the entry-level market. He cited this as a reason Growth Stack prioritizes acquiring businesses with defensible moats.