God doesn’t take action against a person who has long history of faithfulness when he fails for the first time. For example, Satan is freely permitted to move in heaven and on earth even after many many sins he keeps on practicing. Israel as a nation was not rejected at the first instance of their disobedience.
So for the next 6 thousand years Satan had free range of shifting between heaven and earth with no other penalties on him or his followers .No suffering ,no death ,no indignity`s ,no anything.
except for some future punishment thousands of years in the future no doubt.
Big deal
How does that compare with Adam & Eve ? They were immediately sentenced to a life of misery outside of Gods favour and so were their offspring to what we see today 6,000 years later of misery , disease ,indignity`s ,suffering and ,death .
No normal parent today would put their child through any suffering of any sort for a minute however Jehovah God has put his children through the worst of sufferings for thousands of years.
Wasn`t Satan the original apostate ? If anything he should have recieved the more heavier sentence.