In reality, GoPro is killing Sony in the action cam market. Back in 2013, IDC reported that GoPro controlled 47.5% of the action camera market, compared to 6.5% for Sony. By the third quarter of 2014, GoPro's share had risen to 56.7% as Sony's plunged to 2.9%. The second largest action cam maker in the world, ION Cameras, saw its share decline from 10% to 7% during that period. IDC hasn't released updated numbers since then, but claiming that GoPro is "vulnerable" to Sony is a huge exaggeration. Social media interest also reveals a huge gap between the two companies -- Sony's Action Cam channel on YouTube has around 74,000 subscribers, while GoPro's has over 3.3 million. Sony's Action Cams. Source: Sony 4. Overlooking its growth beyond action cams Last but not least, Eule doesn't mention GoPro's growth in media, software, cloud services, virtual reality films, or drones at all.