It is a complement, not a replacement
A wall outlet is useful when the customer has the right cable, a suitable seat and time to wait. HubKore does not ask a venue to remove that convenience.
The difference is mobility
A shared power bank can stay with the customer. They do not need to leave the phone beside a wall, change seats or ask staff to lend and track chargers and cables.
A practical service decision
Suitability depends on real customer demand, an accessible placement area, safe and stable electricity and the venue's ability to support basic equipment care. Every application is reviewed before equipment, terms or timing are confirmed.