These days Indian Railways issuing very long list of wait listed e-tickets even in tatkal quota and very low percentage of e-tickets gets confirmed. I have noticed wait listed tatkal e-ticket up to WL-100 while WL-30 not being confirmed. I wonder, whether it is being done for extra earning by reservation/cancellation charges.
In my opinion, Indian railways should following some statistical method to book wait listed e-ticket in such a way that ticket may get confirmed or railways should put some measure to accommodate the wait listed passengers. Otherwise railways should not issue wait listed e-ticket if changes of getting confirmed is low, so that passenger would be able to make some alternative arrangement of the journey.