How many times do we play the ‘right‘ shots in the wrong order, and the ‘wrong’ shots in the right order!!!!
We like to use what the Pro’s use, so do amateur golfers. But there is a trend moving the other way!!!
Old school was using a ‘set’ of irons, now they are starting to pick groups of irons from different tiers within a brands group of irons. Irons for high handicap players, Irons for mid to high handicappers and irons for scratch / pro golfers were usually just for those groups, now the penny has dropped somewhat - if a club is easier to use, why aren’t I using them?? Now some pro’s pick out smaller groups of irons - to make up their ‘set’ some old school ‘blades’ some cavity-backs, some muscle-backs. They hit shots, collect the data - weigh up the pros and cons, make a decision based on their game and the facts in the form of data.
For table tennis SpinSight is a move in the right direction, cheap, easily understood, pretty reliable. I know there are members now using SpinSight, I’m just waiting for it to be available in the uk. Perhaps we’ll start getting feedback from these members, some proper data comparing rubbers and set ups that are not reliant on manufacturers blurb and the reviews we like to do and read.
This of course may not be what the Table Tennis manufacturers want!!!!
Your golf analogies are un-understandable for those who don't play golf. Since you're in the UK, I think a better parallel that you would understand is cricket bats, since those are also wood based. I played cricket at a pretty high level and I can tell you that you can definitely buy bats the top pros are using commercially. The only difference is in selection.
Since there is a natural variation in the wood, a sponsored player gets sent 40-50 cricket bats depending on the level of sponsorship and they choose a few of them based on feel. Among those selected, pros have their favorites based on how the bat turns out after knocking and other "treatments", for which every player has a different processes. (for table tennis, it could be sanding, sealing, etc)
Though unlike table tennis, cricket pros also source their bats from independent bat makers, but there is nothing really stopping you from buying the same bat from the same bat maker. An example of this would be a pro player getting a blade from SDC and having Li-Ning as a sponsor. Since Li-Ning does not make blades, there is no conflict for all the parties involved.
But you can get the same "quality" bats commercially. Which means what wood was used, how many pieces and the grain, etc. Even among those differentiators, players have their preferences based on which position and style they like to play. Some players even change their bats based on what the match situation is. But these are definitely minor differences, mostly rooted in feeling and superstition, not any kind of data.
Also, there are countless instances of players using each others bats and they don't suddenly forget how to play. It takes a long, long time to develop this feeling of knowing what exactly you like and that too, changes over time. But if you buy a commercially available Joola ZQH 90 of the same weight and dimensions that Liam is using, you basically have his blade.
Joola or any other manufacturer gains nothing from having a different version of the commercially available blade reserved for pro players. They may as well slap the pro's signature on it and sell it for 3x the price.
I don't know how it works with the CNT Viscaria versions and the like but I would guess since its still a matter of selection. Its just that someone else working at Butterfly would be doing a preliminary selection based on some criteria because they have to send a large contingent which otherwise would become even larger if they don't do it.