The 1985/86 Tests in Australia

After the farewell of the Greg Chappell, Dennis Lillee and Rod Marsh, then the crushing defeats both home and away against West Indies, followed by the 3-1 loss to England in England, Australia at Test Match level had fallen in a heap. Then the troubles plummeted to alarming levels when on top of that, the defections to South Africa occured. This was the public interest in the 1985/86 series against New Zealand and India:
New Zealand:
Brisbane 4042 4242 5097 2022 641 16044
Sydney 6558 9957 12871 5141 3021 37548
Perth 12544 13120 9938 6517 4681 46800
India:
Adelaide 8141 9519 7109 4091 1455 30315
Melbourne 29108 18146 15751 14710 4000 81715
Sydney 17736 14263 16326 14292 4911 67528
The three ODIs held in Adelaide in that same season totalled 62,621. More than double the Test crowd but over two less days. There were predictions in the early 80s that Test matches would be dead by the end of the decade, however a resurgence by Australia followed by domination put paid to that in this country.
Will the same happen for 20/20, that Test matches will survive the test of time? The ODIs back at this time did not clash with the Tests like the IPL does now. There was no need to go to South Africa for more lucrative deals once the fall of apartheid resulted in their return from exile, but who's to stop the IPL going from strength to strength when the ICC go hand in hand with it?
New Zealand:
Brisbane 4042 4242 5097 2022 641 16044
Sydney 6558 9957 12871 5141 3021 37548
Perth 12544 13120 9938 6517 4681 46800
India:
Adelaide 8141 9519 7109 4091 1455 30315
Melbourne 29108 18146 15751 14710 4000 81715
Sydney 17736 14263 16326 14292 4911 67528
The three ODIs held in Adelaide in that same season totalled 62,621. More than double the Test crowd but over two less days. There were predictions in the early 80s that Test matches would be dead by the end of the decade, however a resurgence by Australia followed by domination put paid to that in this country.
Will the same happen for 20/20, that Test matches will survive the test of time? The ODIs back at this time did not clash with the Tests like the IPL does now. There was no need to go to South Africa for more lucrative deals once the fall of apartheid resulted in their return from exile, but who's to stop the IPL going from strength to strength when the ICC go hand in hand with it?