Pros and cons of dual-listing
The pros, as outlined above, are access to capital with new stock offerings and more stock trading volume.
The cons are mostly related to cost. Listing on multiple exchanges comes at a price. The custodian bank holding the trust when a company goes the ADR route has to be paid, and the entity needs to be structured and updated by lawyers. If the business doesn't dual-list via an ADR, there will be massive costs to state financials under SEC regulations and comply with all other exchange rules.