5th degree Zucking... Facebook's perpetual MO to crush competitors: bring their most successful feature to Instagram. In 2016, FB essentially crushed Snap Stories by launching Instagram Stories. In 2018, FB tried to take on YouTube by intro'ing IGTV. In May 2020, FB threatened Amazon by shipping "Shops" for ecommerce on Insta. Then FB started obsessing over the fact that TikTok has been downloaded over 2B times. So...
"Reel it in, I got a bag"... FB has the $$$ to not only nab TikTok's product, but also its content. According to the WSJ's infamous "people familiar with the matter" (#PFWTM):
Success breeds copycats... But not all copycats are created equal. FB isn't the only one trying to replicate TikTok features, and TikTok-style apps like Triller and Dubsmash were launched years before TikTok. Since these product ideas aren't something companies can patent, they're up for grabs when they launch. Companies in similar industries are always incorporating each others' successes. But because of their huge-ness, FB and other Big Techies are facing intense regulatory scrutiny (including by Congress today).