Well, it's still poorly used, but this can change in the future with logical improvements. Decentralized products are always poor if there are only few which use it, above with shabby servers. But a decentralized network is at the end the only way to escape the control of these surveillance companies. Tor in the Onion network isn't really free of this and controled with backdoors by the NSA and others (the Onion was developed by US Defense and Secrete services), entering only with TOR, without also using VPN with several server redirects (startet before starting TOR, to get the tunnel beginning from the VPN server and not from the one of your ISP. Because of this a VPN extension in the browser isn't a so good idea, only can start after the browser connect to your ISP server), expose you. very fast, not only by the gov services, also by the fauna maligna there. The TOR browser isn' specially secure, it is only a browser capable to access the TOR network. In the normal open network isn't more private as FF or any other browser, only slower and less compatible with the current web standarts, it is for what it is.