How different is "joy of ownership" in the Dīgha,jānu Sutta from clinging onto one's wealth?
How different is “joy of ownership” in the Dīgha,jānu Sutta from clinging onto one's wealth?

Actually the answer's already provided in the sutta itself. If one clings to one's wealth, s/he won't be able to have a balanced living, the necessary component to the joy of ownership:

&quot;And what is balanced living? Here, a clansman knows his income and expenditures and leads a balanced life, neither too extravagant nor too frugal, [aware]: ‘In this way my income will exceed my expenditures rather than the reverse.’ Just as an appraiser or his apprentice, holding up a scale, knows: ‘By so much it has dipped down, by so much it has gone up,’ so a clansman knows his income and expenditures and leads a balanced life, neither too extravagant nor too frugal, [aware]: ‘In this way my income will exceed my expenditures [283] rather than the reverse.’
“If this clansman has a small income but lives luxuriously, others would say of him: ‘This clansman eats his wealth just like an eater of figs.’1751 But if he has a large income but lives sparingly, others would say of him: ‘This clansman may even starve himself.’1752 But it is called balanced living when a clansman knows his income and expenditures and leads a balanced life, neither too extravagant nor too frugal, [aware]: ‘In this way my income will exceed my expenditures rather than the reverse. ~~ AN 8.54 ~~