I don't know about 'Tuning', but I do know that the Performance Industry is still strong. We still get new members for the lapping club, all of our track days are full as our schools.
Lapping, Performance Driving, and Modifying your car FOR it, is still strong!! Body Kits and Wings... I don't know anything about that, unless its an APR Wing to provide downforce
As for the accessability for the race tracks... they are very accessible. Have you ever tried??
Sunday nights there is the Time Attack at St Eustache. Spend 10$ gets you 5 laps. On top of that, if you want to go during the day to St Eustache, you can. You get a couple of buddies together, pool together your money, and boom you have it.
I've gone several times with different people, who call one week in advance and book a 3 hour slot at St Eustache for a couple of hundred bucks. Race tracks are expensive things to maintain. You have the property taxes every year, you have staff, maintanence, and all the other shit to pay for. Nothing is Free. If you want to build a new track, Sweet! You'll need about 10 million bucks... thats only after you bought the land.
On top of that driving on a track isn't all fun and games. Thats why with the lapping club the primary focus is getting people TRAINED to drive on a track. And yea... Driving home at 90kph from the track does seem slow... but its only a 20 minute drive from the Autodrome St Eustache to the West Island, and does it ever feel like a nice cruise after ripping it on the track.
As for your 'quicky' for the week... ASE Lapping Club.. $20 dollars for 20 minutes every Monday night throughout the Season. Thats a nice quicky for me!