My understanding is that there is a difference. Many hybrids in nature are sterile. What GMO companies like Monsanto do, however, is

a. Artificially make "terminator seeds"[1] that would naturally be fertile but have been made deliberately sterile, and

b. Where seeds don't have that technology, rely on contracts instead that forbid farmers from saving seeds for next year.[2]

1. http://web.mit.edu/demoscience/Monsanto/impact.html#terminat...

2. https://www.agweek.com/opinion/columns/4390497-what-does-tec...