The industries now require the assistance of a professional voice artist for promoting or selling their products/brand name through advertising, e-learning, explainer videos or jingles. So a strong and captivating voice not only helps to capture the audience but it also helps to leave a long-lasting impression. There are a vast number of opportunities that exist for voice actors. As a voice actor you might be working on a marketing campaign one day, a commercial the next and then the following day on a TV ad or animated video!
Source : https://www.voyzapp.com/blog/growing-opportunities-for-voice-artists-in-voice-overs