this.

Contemporary novels too don't tend to talk about anyone not important to the story, which includes servants, office workers etc. etc.

The number of people from the working class mentioned in Emma is quite large IMO, though maybe just once, and by profession, like 'the butcher with the tray'.

Regarding the other point.

200 years from now the society then will look back and see many things not quite in order now, which we fail to recognize or think about.

I think it's just a matter of the particular 'stage' in the development of old societies, formed by factors prevailing then and gradually changing as the society develops.