1. Holding a concert can bring huge economic benefits. By holding a concert in Macao, a large number of tourists can be attracted to watch. After the concert, these tourists may stay in Macao to continue their entertainment and consumption, further promoting Macao's economic development.

2. Concert can increase the popularity and influence of Macao. Holding large-scale concerts can enhance Macao's international popularity and influence and attract more tourists.

3. Concert can bring good social benefits. Holding concerts can enrich the cultural life of Macao residents and improve the cultural taste and image of the city.

4. Holding a concert needs a certain economic foundation and facilities. As an internationally renowned tourist city, Macao is rich in economic resources and complete supporting facilities, which can meet the needs of holding large-scale concerts.

The government's support for the cultural industry is also an important reason for holding concerts in Macao. The government encourages the prosperity and development of the cultural industry by providing relevant policy support and financial support, thus promoting the development of the cultural industry in Macao.

6. Macau's unique geographical location and cultural background also provide favorable conditions for holding concerts. As a place where Chinese and Western cultures meet, Macao's unique cultural charm can add more color and charm to the concert and attract more tourists to watch and experience it.

To sum up, there are many reasons for holding many concerts in Macao, including economic, social and cultural factors.