2018 Kemerovo Fire: Was the lesson learnt?

March, 25, 2018, a fire engulfed Winter Cherry, a shopping mall and entertainment complex in Kemerovo, Russia. 60 people died.
Many sources talk about the actual issues that occurred on that day such as why emergency exits were closed, why fire was so quick to spread, why so many people died. We wanted to discuss it in the bigger context, having a thorough look at the prerequisites too.
We would like to see if there is a conclusion to draw three years after the fire.
Here are the questions we would like to answer: Were all the guilty brought to trial? Were the lessons learnt? Could a tragedy happen again?
Contents:
0:00 Intro
1:03 We decided to look at it thoroughly, just like Putin promised to
4:59 Why did people end up in Winter Cherry on March 25? Children went on a school trip to cinema, some people received invitations after the elections and so on.
7:32 There was no fire alarm, neither there was security
10:25 Why didn't the fire alarm go off?
13:42 "When people left the hall, it was too dark". Why many people could not leave cinema halls?
16:21 "Guys, we will die here! What on earth are you doing?" - Call recordings of people from the Winter Cherry on fire.
18:36 Fire fighters who did not comply with the regulations and lost precious time.
23:05 Water pressure was too low so fire fighters could not use their hoses.
24:20 Witnesses were catching people falling out of the windows
27:00 Governor of Kemerovo says to Putin: "These people are not even relatives of the dead, the are casual protesters".
34:37 The governor Tuleev resigned after 20 years of being in charge of Kemerovo
36:39 The security staff member of Winter Cherry pressed the alarm button but it did not work.
38:25 Why do most people accuse fire fighters?
40:51 Winter Cherry in 2009. How did a bakery factory become a shopping mall?
43:55 Forgery of documents and a 7 million bribe. How did the building begin to function?
46:11 Were high ranked officials involved in the bribe giving process?
48:32 Owners of Winter Cherry: brother of mayor, influential police officers and owners of coal mines.
49:12 Winter Cherry was managed by a nominal director who should had understood the possible consequences.
52:31 Real owner of Winter Cherry was not brought to justice. Why so?
57:02 Was the investigation as thorough promised by Putin?
1:01:04 Have things changed after the tragedy in Winter Cherry?