Failed business

FIRST BUSINESSMAN: 'I really can't understand why your business failed.'
SECOND BUSINESSMAN: Too much advertising.'
FIRST BUSINESSMAN: 'Oh, come on - you never spent a penny on advertising.'
SECOND BUSINESSMAN:
SECOND BUSINESSMAN: Too much advertising.'
FIRST BUSINESSMAN: 'Oh, come on - you never spent a penny on advertising.'
SECOND BUSINESSMAN:
Spoiler: