In the coming years, I fear there is going to be a fairly significant decline in kids playing baseball.
Consider the demographics of the young white population (baseball is overwhelmingly a white sport). Nationally, whites under the age of ten lost 1.2 million kids from 2010 to 2017. The decline in white children is pervasive occurring in 43 states and 81 of the largest 100 metropolitan areas. This trend has taken place over four-fifths of the nation's 3,100 counties.
The recent boost in baseball participation is kids fleeing football (mostly due to concussion concerns).