The mystery of the 'random sales method' that we buy even though we don't know what's inside until we open it

The random sales method familiar from items like button badges, trading cards, and acrylic stands.
While there is that excitement of 'not knowing what's inside,' surveys actually show that
about 90% of consumers feel they 'don't like it' as well. Even so, many people have had the experience of buying them at least once.
Buying them even though you don't want to...
Human psychology is truly interesting, isn't it?

Why do companies continue with the random sales method? The reason is very simple.

Because it can reduce inventory risk and maximize sales. If the system allowed people to choose and buy only popular characters, unpopular characters would remain unsold.
However, by making it random, it becomes easier to sell all types in a balanced way.
Furthermore,

• 'I want to buy until I get my favorite'

• 'I want to complete the whole set'

• 'Just one more...'

Such feelings are said to work, causing the purchase amount per person to grow significantly.
From the company's perspective, it is a very rational sales method.
But if you go too far...
On the other hand, there are many voices from fans saying,
'I want to choose and buy even if it's a little more expensive.'
If you keep buying repeatedly because you can't get what you want, the stress will outweigh the fun.
As a result, some people end up distancing themselves from the work itself.
Increasing sales versus being loved by fans for a long time.
That balance is very difficult.

I was also obsessed in the past Actually, when I was a child, I was obsessed with collecting

Kinnikuman erasers and cards. I have memories of trading with friends and experiencing ups and downs like,
'I got Warsman!'
'Not the same one again...' (laughs).
Back then, it was truly fun, including the time spent clutching my pocket money and heading to the store.
That is why I don't think the random sales method itself is bad.
The excitement of the moment of opening and the joy of pulling your favorite character are still special experiences, I think.
However, isn't the most important thing a balance where both consumers and companies can enjoy themselves comfortably?
What do you all think?

Are you the 'buy even if it's random' type? Or the 'want to choose and buy' type?