I thought that the reason why people were plagiarizing in the past was because of the lack of research tools and platform.
That's a funny comment because I see it differently than you.
In the past, search engines were less powerful and efficiently in searching and found results than now. So in the past, people had to spent more time from searching even just for plagiarisms.
Now, it is more easily to do searching and plagiarism so it's non sense to say in the past, people did plagiarism because they lacked of proper searching tools. They used searching for plagiarism man.
Now that even google has integrated AI, research shouldn't be difficult and the rate of plagiarism is supposed to reduce drastically.
Why is there still plagiarism?
It makes their plagiarism works more easily and effortlessly.
[TIPS] to avoid plagiarism.[GUIDE] Plagiarism and how to avoid it.