Could you survive/be as successful without a HUD?

It's pretty clear that HUDs are a contributing factor to "games drying up" in FR and 6-max on sites like Stars and FTP. I say this, because I play on a UK site which doesn't allow HUDs, and the games are still as donkalicious as ever.

I feel that in a few years time, even Stars and FTP will ban HUDs, to give even the casuals a "fair" chance at the game.

Seeing as the stats are an integral part of modern online poker, could you be as profitable (if you are that is) without a HEM or PT?

Is putting Villain on a range still going to be as accurate? Not saying you don't have to do this without stats, but unless you play with someone regularly, your reads on them may be exaggerated guesses.