Microsft Office, $10 a month for 5 computers, your tablets and cell phone.
1 terrabyte storage per PC
What is the value add from dropblox or those dummies at CarbonFlake?
Buh bye....
Sugarsync too. No real reason for their lame existence.
It is called barriers of entry for competition.
In tech you need to establish something that is hard to reproduce. Like database software, social media critical mass (AirBnB, Lyft, Vine, Secret). These are defensible.
Commodity services, not so much,