1. The Darkweb gets shutdown or takes another hit. IMO the Darkweb/illegal activity plays a huge role in the success and failure of bitcoin.
No, it never played any role in success or failure of bitcoin.
maybe back in the early days like in 2009-2011 it had some effects with silkroad but not today, never. back then there were no good anon coins or they were unknown. also people still believed bitcoin is anonymous!!!
right now the most used currency of darkweb is the
real anonymous coins not bitcoin. coins such as Monero. and people already know that bitcoin is not anonymous!
2. Banks getting involved. If Banks are losing out on money or think bitcoin is taking money out of their pocket they could create a mess for bitcoin.
maybe, but not really a big concern. bitcoin is still small and not taking that much money from banks. and remember that if someday bitcoin becomes big enough to be used instead of banks I assure you that banks will adopt it in a heartbeat. they simply start offering services they offer for fiat, for bitcoin now. like credit cards and loans. and that will just help bitcoin improve.
3. The richest of the rich will own most bitcoins. The rich usually make money from the middle/lower class, if they own most they will be no profits for them and bitcoin become obsolete.
that is not a concern for many reasons.
first because it is not real. and distribution of bitcoin has been good and second if it were real, someone owning that much bitcoin will only help it grow more not doing anything to harm it.