Vernik,Purohit,andDesai:MusicDownloadsandtheFlipSideofDRM
MarketingScience,ArticlesinAdvance,pp.1–17,©2011INFORMS
11
Table2EquilibriumOutcomesUnderPerfectCompetition
Traditionalandunrestricteddownloadableversionsforsale eTM 1+
eM 1
pUD=wUD=T
pUT=wUT=
2
4eTeM 1 +2e2M 1 T t+2e t =
T 1
1
DUT=
2eT 2eM
DUD=M
T e eM 1
SU=T
T UL
Copyright:INFORMSholdscopyrighttothisArticlesinAdvanceversion,whichismadeavailabletosubscribers.The lemaynotbepostedonanyotherwebsite,includingtheauthor’ssite.Pleasesendanyquestionsregardingthispolicytopermissions@.
TraditionalandrestricteddownloadableversionsforsaleeTM 1
eM 1
pRD=wRD=T
pRT=wRT=
222
2e2Tt+eT 4eMt+ t 1 +2t eM 1 =
Tt 1
t+
DRT=
e t +2t eM 1
DRD=T
Tt
eM 1
SR=T
T RL
(seeFigure1).However,therewasnodirectcompe-titionbetweenthelegaltraditionalandthepirateddownloadableformats.Onemightarguethatsomeconsumerschoosebetweenbuyingthelegaltradi-tionalversionandpiratingthedigitalcopyfromtheInternet.Inthissectionweaugmentthemainmodelbyallowingdirectcompetitionbetweenallthreeversions.
Asbefore,thelocationofthedownloadablemusicformatisattheleftextremeandthetraditionalmusicformatisattherightextremeoftheHotelling(1929)linesegment.Weassumethat proportionofcon-sumershasatotalcostofpiracyasinthemainmodel:
i
ei=eTx+eMwithDRMrestrictionsandeiU= eTx+ieM(where0< ≤1,i∈ H L )withoutDRMrestric-tions.Theremainingproportionof 1 consumers
i
hasatotalcostofpiracythatisei=eT+eMwithDRM
Ui
restrictionsandei= eT+eMwithoutDRMrestric-tions.Inotherwords,thepiracycostfor consumersisrelatedtotheirlocation,andfortheremaining 1 consumers,itisindependentoftheirlocation.Thus,forthe proportionofconsumers,theequi-libriumdemandwillbeasinFigure1,andfortheremaining 1 consumers,theequilibriumdemandwillbeasdepictedinFigure3.Therestofthemodelandouranalysisapproachremainunchanged,andthefullsolutionispresentedinTable3.
Inthisextendedmodel,whenwecomparethepiracyvolumewithandwithoutDRMrestrictions,we ndthattheresultstatedinProposition1Bstillholds,albeitwithadifferentcutoffpoint:
32t 1 eT 3 1 2 32eMt2 2
2 eT 1 2 eM 9+ 2 3t 3 2· 8t2 2+eT 1 2 +2eTt 1 2+
1
· 8t +e 1 3+ 4eTeMt 1+ 1 3+
Whenwethecomparerecordlabel’spro tsinthetwocases,theresultinProposition2Bholdsaswell,butwithadifferentcutoffpoint, 1 ,whichisde nedinAppendixD.Itcanbeshownthatthiscutoffpointcanbenegative,whichmeansthattherecordlabel’spro tmayincreasewiththeeliminationofDRMevenwhendoingsodoesnotleadtoahigherutil-ityforconsumers(aresultequivalenttotheoneinProposition2A).Insummary,we ndthattheinsightsprovidedbyourmainmodelarerobustwhenweintroducedirectcompetitionbetweentraditionalfor-matandpirateddigitalversions.
6.
where = 1 and = 1 1 .
Sincemusic rstbegantobedownloadedontheInternet,therecordingindustryhasfrettedaboutthelong-termimplicationsofonlinepiracy.TheindustrypursuedDRMasapartialsolutionbecauseDRMrestrictionsmakecopyingharder;theydecreasepiracyandthat,inturn,improvesindus-trypro tability.Ontheotherhand,DRMrestrictionscanpotentiallyreducethevalueforlegalbuyersoftheproduct.Inthispaper,weshowthateventhoughDRM,piracy,andpro tsarealllinked,therelation-shipsamongthemarecomplex.TheconventionallineofthinkingmissestheimpactofDRMtechnologiesonthenatureofcompetitioninthelegalmusicmar-ket,whichinturnaffectstheconsumers’proclivitytosteal.Saiddifferently,becauseDRMdecisionsbythelabelaffectwholesaleprices,retailerincentives,retailprices,thelevelofcompetitioninthemarket,andtheincentivesofconsumerstosteal,theneteffectonpro tabilitydependsontheconditionsimposedbytheDRMtechnology—insomecases,itimprovespro tsforthelabel,andinothercases,itdecreasesthem.
Mostoftheexistingresearchhasfocusedonunder-standingthelinkbetweenpiracyand rmpro tabil-ity.NotonlydowelookatthelinkbetweenDRMand
Conclusion