Technological innovation rarely serves the interests of society as a whole.
Conclusion (this can seen from fact)
Technological innovation rarely serves the interests of society as a whole.
Evidence
People responsible for technological advances are striving to develop commercially viable technology, so they're almost always motivated by considerations of personal gain, rather than societal benefit.
Evaluate
There's a bit of an intermediate conclusion happening when the author says .
I don't have to accept that striving to develop commercially viable technology means you're motivated by personal gain. Perhaps you're motivated to have a company that is solvent (it can pay its bills), but you could be developing something commercially viable as a service to manking.
But the bigger gap here seems to be between the idea that, Doesn't something usually have commercial viability because people see value in it? It's useful or desirable to them?
So isn't producing a commercially viable item creating something useful / valuable to those who buy it, and thus potentially benefiting society as a whole?
This argument is committing the semi-famous flaw Intent vs. Consequences
The author is saying, .
The giveaway for this flaw is that the evidence is talking about someone's motivation, but the conclusion is talking about actual results.
Goal
Look for an answer complaining about the Motivation vs. Result move, or an answer pointing our that commercial viability usually means that a wide swath of people think they would benefit by having your product.