Concentration of wealth and power in the hands of a few, and the patronage system that follows from it helps provide the stability needed for musicians to progress beyond the patronage system.The middle class provides a new market for musicians to sell their works, and leads to the creation of the public concert, works for amateurs and aficionados, and an increase in instructional treatises and instructors.Freelance work also becomes a viable option through venues such as the opera, publishing houses, selling of dedications, and various changes in the rights of the composer and the involvement of music guilds and monopolies.
Haydn first mastered the art of moving from a major key to a minor and back to a major key within a short period of time. Mozart was also admired for doing this. Overall, Mozart wrote more modernly for the time. Mozart used some musical ideas from Haydn. Like Haydn, Mozart also enjoyed using some musical humor. Though Haydn enjoyed doing introductions before the first movement in his pieces, his were often shorter in length. Mozart used this idea and made his introductions much longer.
Explanation:
Place yourself in there shoe, is it easier now than back then or was back then easier than now? That's the real question. To truly understand this you have to go back to the beginning. It say "While he often got to write the music he wanted to, Haydn also wrote music that catered to the interests and desires of the Esterhazy’s since they were his patrons", in their point of view it was  better being employed by wealthy patrons. I think the earlier system of musicians being employed by wealthy patrons was worse than the way independent musicians support themselves today because musical examples of Haydn and Mozart as they pertain to changes in economic system.
