I am just wondering what services any company could possibly offer across the board to PhD students in regards to editing?
Certainly, I wouldn't anticipate there being anyone outside a very narrow field of expertise that would be able to edit my work effectively - whether thesis or article/book chapters. Also, there are supervisors/peer reviewers who do this for us, so I certainly wouldn't pay for it (making it a not-very-attractive business proposition).
If you are referring to proof-reading (which in my opinion, is quite different), I am not sure of the best avenues. There is no doubt a market for this - but the only ads I have ever seen were flyers on notice boards on campus. And these I would be somewhat sceptical about...

i think it is normal - but apparently baffles others: 'experimental travel and anti-tourism encounters'...

I think it was really mean of him - and it would have been much more appropriate to take you aside afterwards to discuss.
Is it because the point he was agressive about was something that was in opposition to his work? I have inadvertently challenged the head of my department - through not being familiar with their published research... She certainly got pretty finicky about it too.