Taboola, which was started in Israel and is now based in New York, is profitable, according to Mr. Singolda, who said it collected a projected $1.2 billion in gross revenue last year — $379 million in net revenue, excluding payouts to publishers.In late 2019, Taboola saw a path to even greater growth in a merger with Outbrain, its chumbox archrival. That October, in a long-expected deal, the two announced plans to combine under the Taboola name.But within a year, both companies’ financial situations had changed. Antitrust regulators in Britain and Israel were still investigating the deal. The pandemic drew more viewers online …