>>> Dropbox signed up 13 large companies with more than 1,000 users each So let's say the average employee count is 2k and they negotiated to pay $100/user/yea

>>> Dropbox signed up 13 large companies with more than 1,000 users each So let's say the average employee count is 2k and they negotiated to pay $100/user/year. 13 * 2000 * 100 = $2.6M. Even if we double the average employee count and assume they pay standard $150/yr, it's $7.8M. Assuming that business offering is their strongest bet to get as strong as some investors might like (i.e. justify the valuation), how many of these do you need to justify $10B valuation? And how big is the market? I am not sure that it all adds up.