Most don't get out of it for the same reason they were pigeon holed in the first place, lack of elite scoring skills.
Look at Raffl, he's had his shot on top scoring lines, PEB got a shot on the third line, etc.
If you work on your shot, you'll get your chance, I expect Laughton to get a good shot at 3 LW, and if he scores there, someday a shot at the top 6. Because he can skate and shoot, given the right center I think he could blossom. And that's the key for most forwards, work hard, do the dirty work, and take advantage of opportunities - start sinking shots you've created by hard work and the HC will eventually decide to put you on a line where you get more scoring opportunities.
Playmaking centers are a little different, I think ice vision/playmaking is basically an innate talent that reveals itself early in a player's career, Giroux has it, Couts has it, Patrick has it, Frost has it, Vorobyev has it, Laughton doesn't have it, Schenn didn't have it. Experience can make you better and help you cut down on mistakes, but if you don't got it, nothing really helps.