I have definitely worked in this world - I feel like the right replacement for FTP for sending large assets around would be to host them in an S3 bucket, sooner

I have definitely worked in this world - I feel like the right replacement for FTP for sending large assets around would be to host them in an S3 bucket, sooner than use web-based services where you add files to your account and share them out with somebody. I know Dropbox and Google Drive are commonly used for this, but isn't it more of a hassle than S3?