There is no definitive answer to this question as it largely depends on the individual and their level of satisfaction with a product or service. However, a recent study by BrightLocal found that 22% of consumers always leave online reviews, while 58% sometimes do. This suggests that the majority of people are at least somewhat likely to leave an online review if they have had a positive experience.
It is also worth noting that the number of people leaving online reviews has been steadily increasing in recent years. This is likely due to the growing importance of platforms like Yelp and Google My Business, which make it easy for customers to share their thoughts with others. As more and more people turn to the internet to find local businesses, it is becoming increasingly important for companies to encourage their satisfied customers to leave positive reviews.
Incentives like discounts or freebies can be effective in getting people to leave online reviews, but it is important not to offer anything that could be construed as bribery. The best way to encourage customers to leave positive reviews is simply by providing excellent service and products that exceed expectations.