From my POV,

Strict laws must be implemented with heavy fines and punishments. Also, TTE Staffs must focus more on ticketless passengers and Railways should put pressure on them to control the movement of ticketless passengers. Of course, we don't have that much manpower to control these many passengers. But RB should focus on this and hire more manpower to control this.
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They should bring a system like in metros. If there's no ticket, then no entry inside the premises. Also, they need to increase the SL & GS coaches or atleast introduce new Amrit Bharat trains.

To conclude this, heavy fines, severe checkings and Metro-type systems will create a fear in the ticketless passengers' minds and more focus on AB trains will be helpful for those passengers.

The main issue is that at most of the railway stations no one bothers to keep a check on anyone. Whether you hold a ticket or not or whether you're carrying an explosive, you can travel freely.

Second issue being railways reducing options for UR ticket travelers. Long distance GS coaches are so packed you can't keep a foot there. At places there's almost zero passenger/MEMU services. Where will daily travelers go, even if rake standardization is taken back?
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Third a lot of people are habitual offenders, give them a rake full of GS coaches, they'll still stand in the vestibules of AC coaches. They'll abuse or threaten you if you ask them to leave your own seat. TTEs and RPF in most of the teains don't bother them.

So this problem needs a lot more planning and mitigation than just removing rake standardization or adding more Amrit Bharats. But IR officers are lazy, they come up with trains with absurd categories, timings and routes. So this would be asking for too much.

Although the picture is not so black and white. I've seen the whole train ticketless in ARA-SSM section. Whereas I've seen people having valid tickets even when boarding in the middle of jungle in BRK-MLN MG section.