Man a lot of people talking here with no real advice....
**ANSWER = YOU COUNTER JUNGLE AND INVADE. **
Scenario 1 - Invade find jungler
If all your laners are pushing properly they are likely winning so if you go into the enemy jungle you see where he is and fight him. When you're fighting him he cant gank to help those lanes out and your laners wont get ganked. Even if you go even and neither you or the enemy jg dies, then your laners still wont get ganked and their jungler cant be farming either. If you win the skirmish you take his jungle camps and get further ahead especially with the long respawn timers.
Scenario 2 - Invade and no jungler
Even if one of your lanes gets ganked and you invade and take the enemy jungler's creeps, he'll slowly fall behind since he's sharing kill exp with his laner while leeching exp from waves but comes back to no experience in his own jungle so over time your team will gain the experience advantage.
Scenario 3 - Invade, no jungler and no camps
Lastly you can tower dive. Look for an opportunity to do one safely especially if you know where the enemy jungler is. Even just showing that you're present there may force a laner to back off from their tower so they dont get dove, giving you a tower. Or tower diving to get 2 kills and a tower while you die is still very much worth. Throwing a deep ward down in that empty jungle is also huge since you know that's likely where he'll go next since he was just on the other side. Your close laners now know which side he's on and can see which way he's heading to gank after
If their pushed laners comes to help against your invade then your laners at least will be close enough to also come to make it an even fight, or take a tower if its low enough
Farming and waiting for one of your lanes to get ganked is one of the worst things you can do. When all your lanes are apply pressure, you add to it