Complex sentence: It was a strugle for those who basically paid out of pocket to start it up and try to make it for profit, finally succumbing mainly do to the penniless, chaotic nature of the punk scene and not from lack of enthusiasm.
Split into simpler sentences: It was a struggle for those who paid out of pocket to start it up and attempt to make a profit. The club finally succumbed mainly due to the penniless, chaotic nature of the punk scene, and not from lack of enthusiasm.