You don't have to (sarcastically) worry

only a small percentage of the players will be willing to play a "different game". From my experience with road players, the ones that play this style game are the gamblers, if you don't play for money what I'm about to say won't be important to consider.
When ask how Champion players can play such a high level I will say
"We don't play better than other players, we simply play a different type game," this is because I DON'T look at the table and pick the ideal shot for the situation. Sounds foolish doesn't it?
I understand, however, the question is
"can you tell when someone is NOT shooting the "correct, easiest shot", and instead shooting the shot THEY want to shoot every time?"
There's two distinctly different philosophies how pool should be played:
1) That you look at the table and if the "best shot" is to use low/left english with a slow cue stick speed, that's what you should do. If the table tell you to hit the next shot with high/right english with a medium cue stick speed, then that's what you should do. The next shot says you don't need any english and you can just "slow roll" the shot with center "cue ball target," then that's what you should do. You ran the rack, it worked!!!
(this style is what is called the "I have to hit 4000 shots to play pool technique)
2) My philosophy's different with the Touch of Inside technique.
I look at all three of these shots and FIND A WAY to use the TOI with a moderate cue stick speed in all three of these situations. I also run the rack, it worked for me as well!!! (this is the "I can hit handle any table situation with the shot that I prefer technique)
When I was gambling I really liked that most people play the first style of play I described. If they played the second style I could tell right away, and knew I was in for a long, difficult night, and I'd just have to play that type game better, I'd have to use TOI on EVERY SHOT to win.
Now, think about over the course of time how many more choices and calculations the first player (#1) is going to have to make, compared to the amount I"m making.
The only flaw is if I couldn't do all those shots with the Touch of Inside. However, I can and I've proven it over and over, and if anyone wants to set up a situation that it can't be done, just post it and I'll tell you how to do it.
You see I have a distinct advantage - I know every shot can be hit the same way, with just minor variations or adjustments. No one can literally hit every shot the same in a pool game, but after playing for 12 hours you will see a TOI player can get close.

'The Game is the Teacher'