Never are you even looking at this logically? Juggy has been defreated many times, it doesn't matter how or when the fact remains that despite his powers there were and still are ways to beat him. The whole deal with many comic characters is them overcoming high odds for failure ending up with the bad guy loseing (in most cases).
Unless there is a more recent comic in which Venom and Juggy battle the only factual MARVEL evidence as to how a battle would go is with Venom winning. Sure the possibility of Juggy wasting Venom is there, but so is that of Venom winning Juggy, as both characters have undergone substantial power boosts since their battle.
Next I've never made the claim that Venom could get through Juggy's shield by hitting him I merely suggested the possiblility of the symbiote entering through the shield on a molecular level. You say the only thing that can get through is light, but you're wrong so can sound I wonder how much else you don't know hmm... for starters Juggy's shield is only mantained at the cost of energy. The longer he keeps it up the more exhausted he gets.
I'm sure most comic book store employees know more info on characters but it doesn't mean THEY DICTATE WHAT WOULD HAPPEN IF 2 FOUGHT without any Marvel comic to back them up. Additionally your collecting comics for 22 + years doesn't mean you could dictate what would happen in a fight between Marvel characters without Marvel backing.
Next Venom isn't Dumb if you read any of those thousands of comics you have on Venom you'd know that. Eddie was a top student at school, granted it doesn't mean he's smart, but does prove he can learn and focus on problems. While Venom is no Reed Richards there have been plenty of comics in which Venom has understood tech enough to use it against his opponents, where he's set elaborate traps, and where he's quickly adopted new fighting styles to match his opponents. So yes with his agility and camo abilites he could hide or avoid Juggy long enough to defeat him.
As for Hulk I admit I've underated him so far, but he is still defeatable. I think the possibility of Venom using his camo to avoid Hulk untill Hulk calms down thus weaker and then suprise attacking him to knock him out may work (don't give me any crap about that not working cause I've seen that tactic used before on Hulk and work). If not that I still hold on to the POSSIBLIITY of Venom's Symbiote partially controlling or calming Hulk down (and don't give me any "Hulk has no mind" crap either. To get mad one needs emotions, which means thinking which means a mind). I admit the odds are still in Hulk's favor, but he isn't unbeatable to Venom and Ghost.
Ghost could pull Hulk off, keeping out of reach while Venom deals with Juggy, and once Juggy is dealt with then focus on Hulk.