Disable Sharing Form Personal Workspace

Here's the sample for those looking to implement this:

1. Gather all personal workspaces to disable and store it as a variable with IDs
2. Batch it up
3. Start the capacity
4. Run AssignWorkpsaces API to bulk move them into this new ASKU (replace it with your Object ID)
5. Pause  the capacity

$Personal_WS = Get-PowerBIWorkspace -All -Scope Organization -Include All  | Where-object { ($_.State -eq "Active") -and ($_.Type -eq "PersonalGroup") -and ($_.Description -ne "SharepointList Folder") -and ($_.isOnDedicatedCapacity -ne "true") }  | Select-Object id

$ToBeDisabled=@()
$guid = $Personal_WS |ForEach-Object {$_.Id}  
$ToBeDisabled = @($guid) + $ToBeDisabled        

# If you have more than 500, you can use to batch it about 500 each time and loop thru the list
$size = 500
$bins = [Math]::Ceiling($ToBeDisabled.count / $size  )

for ($s = 0; $s -le $bins; $s++) {
    $skip = $size * $s 
    $ToBeDisabled_Batch = $ToBeDisabled | Select-Object -First $size -Skip $skip 
    $workspaceIds = @($ToBeDisabled_Batch.id )

    $body = @{
        capacityMigrationAssignments = @(@{
                #targetCapacityObjectId = $targetCapacity.Id;
                targetCapacityObjectId = "YOUR-ASKU-CAPACITY-OBJECT-ID";
                workspacesToAssign     = $workspaceIds
                            
            })
    }
                                
  
    $bodyStr = ConvertTo-Json $body -Depth 3       
                
    Try { 
        Invoke-PowerBIRestMethod -Url 'admin/capacities/AssignWorkspaces' -Method Post -body $bodyStr 
        write-host "$(Get-TimeStamp)    $($ToBeDisabled_Batch.count) Workspaces assigned to capacity (DISABLED): '$($targetCapacity.DisplayName)' " -ForegroundColor Green 
    }
    Catch {
        write-host "$(Get-TimeStamp)    Failed to disable or assign to Embedded A-SKU     " -ForegroundColor Red 
    } 
}
        
write-host "$(Get-TimeStamp) Disabled all $($ToBeDisabled.count) new Personal Workspaces !!" -ForegroundColor Green  

Hope this helps others!