Patenting your algorithm is going to make you more likely to be sued by patent trolls? That's not how it works... More importantly, why aren't the hevc groups

Patenting your algorithm is going to make you more likely to be sued by patent trolls? That's not how it works... More importantly, why aren't the hevc groups doing this to each other? It's not about privacy, it's about the competitive advantage of inventing something better. Why do insanely profitable companies get patents?