Forestry is an age old industry that is profit driven eg for timber, furniture, paper, etc. There is always a demand for foresters worldwide. Urban forestry is about aesthetics and mitigating climate change. The demand is much smaller as it is a new industry. With growing focus on mitigating climate change the need for urban forestry and the management thereof will increase. For now it is a niche industry and you would follow this career because you have a passion for the subject not because you want to be employable.