No, it doesn't. Just as much Luck or contacts alone doesn't guarantee success either.
As well, success varies in definition to one person or another.
I'm very crude in this mentality, but if you're not achieving something then there is something that:
A- You're not doing
B- You're doing wrong or investing energy in the wrong thing
C- You're Ignoring, be it other circumstances and limitations you currently have, resources or tools you either lack or don't know how to properly exploit
To me a person can have either skill, knowledge, contacts, luck and yet stuff can fail, because you need to keep those aspects balanced, while at the same time being analytic of other things. Planning different approaches and scenarios, being consistent, being creative to solve problems be it long or short term, having charisma and other many things also contribute to success.
You cannot rely on Society or graduating from a specific establishment to "guarantee you" a job.
According to who you are well qualified for a job? Your own judgement? The sentimentalism from a family member?
Anything can happen, yet is your own responsability to have a plan A, B, C and even D. A person working in a dependency relationship should be aware of the current situation, and then either save money, have other job offers at hand to apply the second your boss may fire you, knowing your rights in case of a dismissal without just cause, or lack of proper input on the papers at the moment of being fired.
Relying on luck is like relying on the lottery to either achieve success or living according to a certain standard.
The economy is going to be and deal with its own struggles, yet there is people still with jobs, still living the way they want despite of it. So do they really depend on how the Economy is doing? Some people don't and they arent' rich.
I'm from Argentina, we're well known for having one of the shittiest economies ever, economists, people from other countries and not even ourselves know how the country keeps standing, you're going to find people who struggle to achieve their concept of success, others that have achieved it and several other situations too.