Of course there is commercial value. The cost of reshooting video materials is huge. You made an advert mentioning 3 features, but by the time the product is about to be released one of them got dropped or even worse changed? Congrats, you need to get the talent and the studio rebooked, you need to find a new tech crew, who need to set up again. Probably things won't cut seamlessly so you need to re-record the whole thing.
Potentially also for syncing lip movement for content dubbed in a foreign language. For me when watching foreign media dubbed to English the discrepancy is very noticeable and quite distracting, no matter how well the dub is written, performed, and edited to match the timing of the original.
Yeah, it's a bit like asking why Microsoft doesn't make a BitTorrent client or why Chase doesn't offer a cryptocurrency. The prevailing use cases are just a bit too untoward, even if a few wholesome stories do exist.
Of course there is commercial value. The cost of reshooting video materials is huge. You made an advert mentioning 3 features, but by the time the product is about to be released one of them got dropped or even worse changed? Congrats, you need to get the talent and the studio rebooked, you need to find a new tech crew, who need to set up again. Probably things won't cut seamlessly so you need to re-record the whole thing.