The Patronage of the nobility (ruler of church and state) and of the middle class (merchants and bankers) affected the 16th and 17th century art business positively.
In the seventeenth century, an age of absolutism as the church and nation states began to consolidate their power, patronage became monopolized. The papacy used Gian Lorenzo Bernini to produce grand statements in his Vatican architecture and sculpture that by their splendor and scale affirmed the truth of the Roman Catholic faith. In Rome the Jesuits and other religious orders engaged Francesco Borromini, Pietro da Cortona, and Giovanni Battista Gaulli for large projects that expressed the confidence and expansive optimism of their patrons.
For example, Pope Julius II brought the role of the Church in commissioning art to its height. Some of the most important works of art and architecture in the history of art happened under Julius II' patronage. They are:
The design of the New St. Peter's Basilica. This was executed by Donato Bramante.This Italian Architect was born as Donato di Pascuccio d'Antonio and also known as Bramante Lazzari. He introduced Renaissance architecture to Milan and the High Renaissance style to Rome, where his plan for St. Peter's Basilica formed the basis of design executed by MichelangeloThe Painting of the Sistine Chapel. This was executed by Michelangelo  di Lodovico Buonarroti Simoni, known best as simply Michelangelo, was an Italian sculptor, painter, architect and poet of the High Renaissance born in the Republic of Florence, who exerted an unparalleled influence on the development of Western art. The painting of Stanze della Segnatura. This project was executed by Raffaello Sanzio da Urbino. as an Italian painter and architect of the High Renaissance. His work is admired for its clarity of form, ease of composition, and visual achievement of the Neoplatonic ideal of human grandeur. Together with Michelangelo and Leonardo da Vinci, he forms the traditional trinity of great masters of that period.
For the noble and wealthy merchant-banker popolo grosso families, artistic patronage was a means of achieving and maintaining social status and political power in a society where there was a strict social hierarchy. In Florence, the economic prosperity of the city had enabled the merchant-banker families like the Medici to control the government.
These newcomers were very eager to demonstrate that they belonged as a ruling class in a world of kings, princes, and popes. One way to do this was to demonstrate appreciation for the finer things in life like music, art, sculpture, and literature.
The Medici, for instance, spent huge sums commissioning paintings and sculpture for the privacy of their own palace in Florence.
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