I am applying for PhD position, and I am wondering the difference between a PhD and someone with work experience (or research experience in industry).

What I love about doing research is that I can devote myself to solving an actual problem. I decided to study for my PhD from my childhood, but now it seems to have become an obsession. It feels like I can only fulfil myself after finishing the doctoral study. But what can PhD experience bring me? These days I've been thinking about what would be different if I had chosen to work instead of pursuing a PhD. I could also do experiments and conduct some research projects in a company. Are there any skills I can only learn during my doctoral studies?

I have read some websites that gave me very general ideas, like communication skills, self-starter and project management, but I think I can also develop these skills in a job, even in my Bachelor's or Master's.