This doesn't seem particularly insightful. The author managed to get in a couple of completely irrelevant adverts for his startup and his brother's twitch chann

This doesn't seem particularly insightful. The author managed to get in a couple of completely irrelevant adverts for his startup and his brother's twitch channel. Save yourself some time - the titular question is answered (with the obvious, unsurprising answer) in the penultimate sentence: "you can't buy a good webcam because existing players seemingly don't think it's a good opportunity, and for newcomers the market is hard to enter."