# tailieunhanh - Digital Economy: Impacts, Influences and Challenges 2005 phần 6

## Thông tin về nhu cầu của người tiêu dùng có được thông qua nhiều kênh: phân tích thông tin của người tiêu dùng bị bắt giữ với lòng trung thành của thẻ tại điểm bán hàng, khai thác dữ liệu và hệ thống đặt hàng chiến lược trong kho dữ liệu chuyên dụng, | On Software Piracy 185 The profit of the original software firm is n 1 -tf- q X 8 and that of the pirate is q 1 - q The following result summarizes the impact of the presence of the pirate in the market under network externality. Proposition 1 In the presence of network externality when the pirate is present in the market the demand for the original firm is higher than its demand under protection while price under piracy is lower than under protection. Formally D D nd P o P Proof Follows after comparing and simplifying 2 with 6 and 1 with 4 respectively. . So under network externality the presence of the pirate has a positive effect on the original firm s demand as expected but a dampening effect on the price due to competition. Under this we are interested to see how these two opposing effects combine and what would be a more profitable situation for the original firm between piracy and protection. Protection versus Non-Protection We compare between the profits of the original software firm under protection and nonprotection. Proposition 2 In the presence of network externality given a choice between employing protection and non-protection it is always profitable for the original software developer to protect its software. Copyright 2005 Idea Group Inc. Copying or distributing in print or electronic forms without written permission of Idea Group Inc. is prohibited. TLFeBOOK 186 Poddar Proof To show that rif - n O 0 Observe that nNP - n 1 1 4 1 - q 1 -Oq ---- ------ ---- ----77 1 -0 4 4 - q - 30q q2 - 8qO - 10ớq2 8q 90 2q2 4 1 -O 4 - q - 3Oq 2 The denominator of the above expression is non-negative. We have to show that the numerator is non-negative for all 0 and q. Simplifying the numerator we get 1 - ớ 8q - q2 9ớ - 1 to make it positive we must have 0 8 q 9q which is always true for all q e and 0 e . Note that 9 is decreasing in q. . This result is interesting since under network externality when the pirate is present in the market even if there is

TÀI LIỆU LIÊN QUAN
30    312    4
29    283    3
28    82    1
19    291    3
49    367    9
30    381    0
1    211    2
12    306    1
199    259    3
53    385    12
TÀI LIỆU XEM NHIỀU
8    462023    59
14    23562    70
13    11089    535
14    10310    454
3    9613    106
249    8580    1147
16    8340    423
8    7920    2244
17    6941    260
152    6575    1583
TỪ KHÓA LIÊN QUAN
TÀI LIỆU MỚI ĐĂNG
7    199    1    17-06-2024
75    154    1    17-06-2024
1    141    2    17-06-2024
4    115    0    17-06-2024
1    138    0    17-06-2024
5    120    0    17-06-2024
29    103    0    17-06-2024
1    122    0    17-06-2024
309    102    0    17-06-2024
4    107    1    17-06-2024
TÀI LIỆU HOT
8    7920    2244
152    6575    1583
112    3972    1297
62    5614    1171
249    8580    1147
561    3616    664
122    3824    581
13    11089    535
274    4273    529
35    4275    483