1) Yes, there can be a difference between bought and redeemed. If I buy an oil lease, the oil has been bought with a price, but where is the oil. Still in the ground, therefore not extracted for the purpose of redemption. The Greek word has a range of meaning including bought, bought as in an oil lease, and redeemed as in extraction from being in Adam and transferred to being in Christ.
2) Yes, mankind was bought with a price, Christ laid down His life as a ransom for all. But this "ownership" does not equate with salvation. Only those who receive the reconciliation benefit from the reconciliation purchased on the cross.
3) The premise is that we are bought but not necessarily redeemed. Christ provided reconciliation to life for all mankind, but not all mankind has "received" the reconciliation. Therefore to keep the distinction clear, those redeemed have received the reconciliation. Those not redeemed are indeed consigned to Hades/Gehenna. They wee bought but not extracted and placed in Christ where they would have been saved.
4) Yes many verses teach we were bought, Christ paid the ransom, thus becoming the means of salvation. 1 John 2:2
5) Again the premise is mankind has been bought but only those God spiritually places in Christ are redeemed. Two different groups. The value of the reconciliation is that it provides the means of salvation for anyone placed spiritually in Christ. Thus the ransom provides the opportunity for salvation to all mankind so that whosoever believes in Him shall not perish but have eternal life, provided the individual "receives" the reconciliation.
