The Mule cut down on the number of people needed in factories to spin yarn as it could be done by a machine instead, however, this could be viewed as a bad point by the employees as their job could be cut and therefore they could be made redundant and have no means of income. On the plus side for factory owners, they didn't need to employ many staff- only maintenance people and they didn't need much pay- and Samuel Crompton didn't have enough money for a patent so it was relatively cheap to buy. Money saved all around (after all, every little helps) so factory owners could get rich quick
Unlike most factory machines, when something got stuck or part of the machine jammed only the one machine had to be stopped. The Mule, unlike most machines, was smaller and owners could have many so if one machine had to be stopped this wouldn't affect the overall production too much.
The Mule spun such fine thread to such a high quality; this meant that the price for this on the market was very high. That meant more money for those both the employer and the employed
