[jarin]

No, that's why those companies have PROPOSED terminator genes. There is no commercially available product that actually contains them.

[Kalium]

I sit corrected. Instead, the current typical approach is to use cross-breeding to produce seeds that grow well the first generation and don't produce reliable seeds themselves.

[mejari]

That is misleading, as the goal of that cross-breeding is not to produce unreliable seeds, but in order to produce better results. Look up "hybrid vigor" for details on this. Nothing about the cross-breeding is done in order to hinder re-use of the seeds, it's just that naturally non-hybrid seeds are less effective.