@Maxim **********
People can freely choose where they want to go get a Thai Visa.
Perhaps, not just only come to Laos only for a Thai Visa, but also visit and tour Laos.
There are many reasons that people do not use the 60 days visa exemption, but need a Thai Visa:
DTV Visa,
Non-B Visa,
Non-O Visa that they decide not to get inside Thailand (or unable to).
You can also include Non-OA and all the other Thai Visas that cannot be obtained in-country....