I really want to like this card. It has the potential to be a huge economic swing. It's possible to turn off a Tollbooth or something that costs even more with this. It's possible to use it in combination with something like Inside Job or Feint to get in once and then get back in again later when they can't re-rez because they don't have the money.
It must be admitted, though, that this is a win-more card. It sucks when you can't get in already. You will have a hard time in any come back from behind situation when using this card. If you draw it in a situation where you are already behind the curve, it could possibly leave you worse off since literally any other card in your deck would be better.
On the other hand, if you are already dominating and they rez some 8 coster hoping to stabilize, then you can just shut it down for 0 and be even farther ahead.
Cards like that tend to be bad usages of deck space. You want to be using cards that are good regardless of the game state. Sure Gamble is pretty good if you are ahead or behind, for instance. That makes Sure Gamble a better card than this.
It should also be pointed out that many times you want to use this, you might be forced into using something else instead. That possibility really hurts this card. If you use Same Old Thing to pull out an Account Siphon at the start of the turn, you will likely end with 2 tags and 2 clicks. Do you use Emergency Shutdown? If you do, you might get hit with Scorched Earth and lose. Maybe it's safer to just clear the tags and miss your golden opportunity to turn off that Curtain Wall. Just another thing that makes it that much harder for this card to shine.
Ultimately, the deck is stacked against this card being dominant. Cards like Sneakdoor Beta can really help it, but there is something to be said for having to devote credits, clicks, and such to get rid of the downsides of a card that's already not the best thing since sliced bread in some large percentage of game states.