Why is the Prologue not a problem for the Elizabethan audience that would have attended Romeo and Juliet?

Theof
Shakespeare's basically reveals the final outcome of the play. It tells of
the feud and the love between the star-crossed youngsters. It tells the audience that the lovers
will end up committing suicide, thus ending the bitter rivalry between the Montagues and
Capulets. It also says the play will last about two hours (a dubious claim since it usually
takes at least three when nothing is left out).

The Elizabethan audience of
Shakespeare's day would not be put off by...