Its no longer a news that UBER an international Transportation business has stepped out of Nigerian market after about 12 years of operations, The major reason given is harsh business environment although there could be other underlining reasons which were not really disclosed but lets just focused on the well known reason and draw our lessons.
As a Business Coach its a well known fact that Nigerian business environment is very challenging, very volatile and highly un predictable. Hence its the responsibilities of any business owner to navigate all these challenges and find ways to move forward. 
Despite all these challenges the Nigerian business environment has a huge potential to maximize profits for any business organizations that is able to develop a coping mechanism.
Although UBER operates in different market of the world but in Africa, Nigeria remains the biggest market by virtue of our size and economic activities that goes on daily especially in Lagos which is the commercial capital of the country.

Every business environment has their own peculiar challenges and every business challenges all over the world can be categorized into two groups no matter how complex.
1) Those within your control and 2) Those not within your control
The major way to survive in any business environment is to go all out to solve all the challenges that are within your control to keep your business moving forward while those that are not within your control you developed a strategic plan to mitigate them either to minimize their impact on your business drastically or to find ways to navigate them in a manner that will not affect the progress of your business.
Every challenges has a solution provided you know what to do and if you don't then seek professional assistance.

The exit of UBER has provided an opportunity for other players like Bolt and Lag ride to increase their market share and dominate the market as there is no vacuum anywhere and also open doors to new players because the opportunities are still there for only those who can navigate their ways trough those challenges because those challenges will not disappear suddenly.