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90. Further, a detriment may be more likely to occur, and possibly of a more significant nature, in case of
a large online platform in which lock-in or network effects may be present. The detrimental
consequences of denying access to a service can be even more important for the users of online
platforms which have not been implementing ‘consent or pay’ models from the outset but have
subsequently decided to introduce them.
91. Network effects may make it harder for data subjects to decide not to access the service without
suffering any negative consequence. This is particularly relevant for platforms which rely on user-
generated content or user-to-user interaction, such as video/image-sharing platforms and platforms
for communication, such as social media sites, dating platforms, discussion forums, or booking
platforms with a large amount of users. If a platform has a large user base, new and existing users may
consider that interacting on that particular service is necessary to join a digital community where their
friends, family, colleagues are, or to participate in political discussions or conversations. Others may
feel that they have to use a service in a professional context, or that they, as parents, have to use a
particular site to receive information regarding their children, such as parents groups for planning
social activities for children. Not interacting on the platform or choosing another service may be
unrealistic, as it is difficult for an individual to, as an example, convince their social, professional or
political circles to move from one service to another which does not track their users.
92. Any lock-in effects may also lead to detriment for data subjects. Users who have used the platform for
a while may have already established their online presence on the platform invested in it, for example
as regards connections and interactions with other users, creating content, gaining followers and
‘likes’, etc. This effect is further amplified when a user has spent a large amount of time on the
platform, e.g. when the platform has been offered for a longer time period already. Where such users
are asked to pay a fee or consent to the processing of their personal data for behavioural advertising
purposes in order to continue using the service, but they refuse to do so and lose access to the service,
they risk not being able to bring their interactions, followers and connections to a new platform, and/or
losing content and information that they have compiled or generated while previously using the
service. This could encompass a wide range of material, such as personal communication, contact lists,
search history, saved preferences, images, dashboards, different kinds of personalised databases etc.
For a content-creator on a media sharing-site, this may entail a very substantial and potentially
irreparable loss for the user, in the sense of a possible financial loss, the loss of a portfolio a creator
might have built over the years on a platform and a loss of following.
93. In this context, it is important to recall the importance of data subject’s rights and the fact that these
rights should always be respected by the controller. Even in the case where a data subject would no
longer have access to the service, they would still be entitled to exercise their rights as a data subject
under the GDPR, for example the right to access their personal data and the right to data portability.
It is the responsibility of the controller to inform the data subjects of this when providing the data
subjects with the choice to either give their consent or not and ensuring that the ability to exercise
these rights will be maintained.
94. If any of the (non-exhaustive) negative consequences described in the paragraphs above are present,
offering the sole choice between a paid service and a service entailing behavioural advertising based
on the data subject’s consent would impact the possibility for data subjects to make a genuine choice
and withhold consent without detriment.
95. In light of the above, detriment is likely to occur when large online platforms use a ‘consent or pay’
model to obtain consent for the processing. As mentioned above in Section 4.2.1.1, whether the
controller offers the Free Alternative Without Behavioural Advertising as a further alternative would