The Jews and the Christians, both, do not find anything banning alcohol in their scriptures and hence they consider it permissible. It is also known that alcohol was not prohibited in the early days of Islam.
So, do the Islamic scholars believe that alcohol was allowed for the previous nations or was it prohibited and they corrupted their book?
The most upvoted response by @AsanRamzan does not even correctly answer the question. Firstly, it uses verses from books that are not recognized as Holy scripture by Islam (a Book attributed to Sulaiman (RA) and the other attributed to Paul). Secondly, even if we count the book of Sulaiman (RA), there is no explicit prohibition in it, only stating the harm in alcohol. Much like the following verse from the Quran:
They ask you concerning wine and gambling. Say, ‘There is a great sin in both of them, and some profits for the people, but their sinfulness outweighs their profit.’ (2:219)
But, this verse did not prohibit alcohol in Islam.
So, it would be better if the scholarly sources regarding the topic were given.