So basically, it's not a problem for other delivery services who took stricter safety measures.
If anything, telling them they can still continue deliver necessary goods is a bit lax, because their employees are not safer processing those.
The Amazon answer is quite unbearable, to be honest. Basically, it's "people can't live without us, so we should be above the law". It's time to show them we can live without them.
It is of course possible that other delivery services have similar safety measures and have not been sued yet, or have more lenient workers, or whatever; but still, it offers _some_ evidence that Amazon might have worse practices than others.
They've been asked by the ministry of work to intensify their inspections during the covid-19 crisis, and they've notified 42 companies they should put themselves in conformity (this is the first step before any legal action to give companies an opportunity to avoid problems, which Amazon ignored).
So all the other companies who did not got problems during their inspection had better safety measures than amazon.
Source [fr] : http://idf.direccte.gouv.fr/Inspection-du-travail-elargissem...
Translated: https://translate.google.com/translate?sl=auto&tl=en&u=http%...
> Unfortunately, [the ruling] means we have no other choice than to extend the temporary suspension of activity in our French distribution centers while we assess the best way to operate with regards to the court of appeal’s decision
So I'm not sure how it's related to what you say. There are a lot of similar businesses that can continue shipping as usual and I would be very surprised if the Law has checked all of them for safety measures respect. It is highly probable that many of them don't do things correctly yet nobody cares. In the end this is typical of the French government hypocrisy that is going for the big (foreign) one just for the sake of symbolism. Cdiscount is a huge French Amazon clone that can still operate as usual, I can bet some of their employees are also at risk.
The relevant part:
> The company said the closure would affect “millions of clients who use our services to have products delivered to their homes during this confinement period” as well as "employees and small and medium sized businesses" that use the company.
Regarding inspection of other companies, please refer to my answer to js4ever in the same thread.
EDIT : also, "others do just as bad" is never a good defense.