Final answer:
Shakespeare became wealthy primarily due to the support of Queen Elizabeth I and James I, who endorsed The Lord Chamberlain's Men, which later became The King's Men, thereby attracting larger audiences and providing a more stable income.
Step-by-step explanation:
The most likely main reason Shakespeare was able to become wealthy as both a playwright and theater owner is a) The Lord Chamberlain's Men served and was supported by Queen Elizabeth I, as well her successor, James I, who both encouraged and embraced the arts in England. Shakespeare's theatre company, originally known as The Lord Chamberlain's Men, enjoyed the patronage of the reigning monarch. When King James I ascended the throne and became Shakespeare's patron, the company's name changed to The King's Men. This royal backing not only provided protection but also signified a prestigious endorsement, attracting more audiences to their performances and increasing their income. Additionally, as an actor, playwright, and business partner in this illustrious company, Shakespeare accumulated wealth that allowed him substantial real estate investment in Stratford, further boosting his financial status.