If those numbers are freemium for businesses as well then yes it would be far lower. Most likely 10% conversion. He said 'business customers' though which is confusing. To adjust my numbers,

     10% of 30,000 =  $1,746,000/year
    100% of 30,000 = $17,460,000/year

What matters most will be those conversion rates combined with (potential) growth rates.