Yes, we have conducted a lot of market research before decide to start this project. We recieved such results:

The global advertising market in 2017 reached 534.7 billion dollars and is expected to increase by 26.2% to 724.8 billion dollars by 2020. It is expected that the largest regional advertising market will remain North America, followed by the Asia-Pacific region. Western Europe occupies the third place, where advertising costs make up about half of the North American ones.

The average annual growth in advertising spending in 2017 - 2020 according to Statista is 4.15%. In the period from 2016 to 2019, the fastest growing regional advertising markets on a global scale will be Eastern Europe and Central Asia. It is expected that the average growth rate of advertising spending in these regions will be 8.9% per year. According to forecasts, the fastest growing segment will be mobile Internet, the volume of which for this period will grow by 72.6 billion US dollars.

So we can make a conclusion that we deal with huge, rapidly growing market with a lot of unsatisfied demand