I would think most people would think that they write software that can understand human speech, the same way they write software that can make a web page. For

I would think most people would think that they write software that can understand human speech, the same way they write software that can make a web page. For the people that do realize it needs to be trained, most of them probably think that it's trained using internal data. Data created at Google or such. Only people that really understand ML are likely to realize they need the scale of data only their customers can provide to do a really good job (_if_ they even do need that).