How are licenses controlled for front-end products?

Question

Frontend

Good evening
There are a large number of front-end products on the web, similar to this one:
https://wrapbootstrap.com/theme/invention-responsi...
Whether it's a set of UI elements or just templates for admins, landings, shops, the meaning is the same - everything they are sold under licenses: for single use, for multiple use, etc.
Для чего нужны эти лицензии и как этот процесс отслеживается разработчиками? Мне не очень понятно, вот купил я допустим по единичной лицензии себе набор UI элементов и клепаю с их помощью шаблоны для всяких там TemplateMonster. Кто и когда может узнать что у меня единичная, а не multiple лицензия? Да и вообще, как отслеживается где и когда я использовал свёрстанный элемент, купленный у кого-то? Это же ведь фронтенд из браузера, все необходимые элементы можно тупо взять из Live Prview, которые эти самые разработчики сами же и выкладывают
Кто-нибудь сталкивался с этой темой?

Answer 1

Licenses are needed not to exercise control, but to win the author in court when he finds his work where he did not sell it. And taking from Live Preview would be an act of theft.

Answer 2

all through the court
you must understand that the "license" in the head of a resident of the CIS is a cargo cult of the real-life in the West (read - "English law", but not only and not so much) the culture of economic and legal relations : all these EULA, royalty free, CC0 - are designed to regulate permissions for the use of a particular product, and in the head of a Western user, the thought of using something without permission simply cannot be taken
Of course, those who use torrents and cracks understand that they are breaking the law and behave accordingly (offshore hosting is also a Western term) + loopholes (for example, Israel is very legal, but in such matters it is good at everything except American), but this only emphasizes that "everything needs permission"
the cargo cult can be clearly seen in our photobanks - I once dealt with the transfer of rights to a product with purchased images and from idiots from microstock.ru no comments other than "extended license" I didn’t get it (later I found Envato, but now Shutter already allows you to use everything everywhere at a regular price, if the picture is from the mass segment), which emphasizes the misunderstanding of the term "license" (something like "share" in the days of MMM)