10k works out to be 40 new contacts per business day( 5 days per week, 52 weeks minus 2 for vacation ) for a year. Let's assume this guy has been "at it" for 4 years. That's still 10 new contacts every day.
Nobody who has actual work to do is going to contact, establish rapport, communicate enough to know the contact would be valuable, and then most importantly, maintain the relationship with 10 NEW people every single working day for 4 years straight.