Before february 20th, 2018, monetization(Display ads on your video) is very easy. You just need 10,000 views only to active monetization and if your uploaded videos like and watched by people you earn well. Now, these days it's very hard. Your eligibility is requirement for monetization to 4,000 hours of watchtime within the past 12 months and 1,000 subscribers. This is not good :(
So, My friend you are right it's time to move on dTube. :)