English Indeed: Theoretically, it is possible. It has long been no secret that an account on the same websites where odds are combined can be purchased jointly.
Now for the practical side. What happens when an account is purchased by a pool?
The first problem that will arise is how you intend to share the time with the other collectors. You cannot use the scanner simultaneously, while everyone wants to use the account at the "fattest" time for surebets (usually on weekends). You cannot control everyone, so sooner or later two or more fillers will log in to your account simultaneously on different devices from different locations. This causes the account to be blocked and money to be lost instead of the expected savings.
But even if you work at different times, it happens from different geolocations on different computer hardware (yes, the programs know that too). You receive a security check with a temporary block, which grows into a temporary suspension.
Conclusion: You do not need to purchase accounts jointly.