You can be useful to your salary owner by understanding whats happening in the wider market. I use the example of understanding TLS 1.2/1.3 to explain why L4/L5/App firewalls are losing their value.
If your job requires communication with non-technical roles (Mgrs, PMs, Execs) knowing about these trends and how they force vendors to behave is valuable. Technology exists in the context of market forces and IT vendors will respond to them. Rarely a vendor might even create something that drives market in a new direction. These should factor into your purchasing and design decisions.