Why America continues to sanction the Iranian people's Internet and e-commerce?

[A-g-n-o-s-t-i-c]

Why America continues to sanction the Iranian people's Internet and e-commerce?
All government men of Iran has bank accounts in western banks.
sanction for selling and buying guns by Iran is ended.
But still e-com and softwares and internet service is forbidden for all Iranian peoples.
Do you know why USA act this manner?

[Cato]

[A-g-n-o-s-t-i-c]

it show it is important to USA that IT and e-commerce sanction be continuous but others ended.