William Langley / Financial Times: IDC: Shenzhen-based DJI and Insta360, accounting for 73% and 20% of global smart camera market in Q2, are vying for the top spot as GoPro's share drops to 3%  —  DJI and Insta360 engaged in ‘civil war’ to become world's top smart camera maker  —  The decline of action camera pioneer GoPro …